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A Porta Para o Verão

3.99  ·  Rating Details  ·  15,733 Ratings  ·  665 Reviews
It is 1970, and electronics engineer Dan Davis has finally made the invention of a lifetime: a household robot with extraordinary abilities, destined to dramatically change the landscape of everyday routine. Then, with wild success just within reach, Dan's greedy partner and even greedier fiancée steal his work and leave him penniless, and trick him into taking the long sl ...more
Paperback, nº 41 da Colecção Caminho de bolso - Ficção Científica, 190 pages
Published December 1986 by Editorial Caminho (first published January 1st 1957)
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(showing 1-30 of 3,000)
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Algernon
Sep 25, 2015 Algernon rated it liked it  ·  review of another edition
Shelves: 2011
I liked it, but it was suggested to me I shouldn't give four stars to every single book I enjoy, so here it goes for Heinlein. I really had no issues with "The Door Into Summer", and Heinlein is still one of my favorite SF masters after this.

I enjoy books that feature engineers as protagonists, and here we have one proto-geek singlehandedly inventing robotics in the 50's and failing rather spectacularly in the human relations department. Later on, there's some time travel thrown in and some cryo
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Mike (the Paladin)
I'm a little surprised I don't seem to have posted a review of this one before. I read this book "way back when". I probably read it first when I was in high school or just after. That would probably be the 1960s. I went through a period when I discovered Heinlein and ran through everything I could get my hands on by him. Some I didn't care for, some I liked and some I loved.

Many people place this in his so called "teen reads" but there is some question about that due to some of the subject matt
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Lyn
Sep 22, 2015 Lyn rated it liked it  ·  review of another edition
An enjoyable SF story from a Grandmaster.

The novel's protagonist, Daniel B. Davis, was a precursor to Hugh Farnham and even Lazarus Long somewhat, though Long was introduced earlier in 1941's Methusaleh's Children. Actually, Davis (and others) are thinly disguised Heinlein: fiercely individualist, libertarian, technically savvy, hard working yet innovative, resourceful, wise cracking, and with a horn dog libido that would make a porn star blush.

I wonder if Door Into Summer used some of the same
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Lance Greenfield
Jan 13, 2015 Lance Greenfield rated it it was amazing  ·  review of another edition
Shelves: time-travel
I really enjoyed this book from beginning to [almost] end. The reason for the "almost" will become apparent.

The story of time travel by various means was excellent. When reading this story, you should remember that it was written in the 1950s. Some of Heinlein's predictions are amazing, and some are way off the mark. It's amazing to follow his line of thinking though.

You can see an outline of the plot in the description. It is fairly predictable, but that didn't detract from my enjoyment of the
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Manny
Mar 17, 2009 Manny rated it liked it  ·  review of another edition
Shelves: science-fiction
Somewhat unusually for Heinlein, this is a cute, fun book which doesn't try to ladle a bunch of right-wing ideology down your throat, or O.D. you on dubious sex. There's some time travel, a sympathetic main character, a Bad Girl, and a cat who steals the show every time he appears on stage. He even gets the title: the reference is to his endearing habit, during winter months, of making the hero open each door in the house in turn, just in case one of them happens to lead into summer...
Jim
Another old favorite picked up as a downloadable audio book from the library. It was quite enjoyable in this medium & the reader was very good. Originally published in 1957, it is set in 'the future' years 1970 & 2000. The idea of traveling into the future via 'cold sleep' was a pretty popular until sometime in the 70's, but cutting edge at this time, I think. Haven't heard about it in humans for years.

The hero, Dan, is an engineer & inventor. His genius isn't in break through techno
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Andreas
Jan 03, 2016 Andreas rated it it was ok  ·  review of another edition
Shelves: classic-sff, 2016
I liked it far less than my previous RAH reads of The Moon is a Harsh Mistress, Starship Troopers, or even Stranger in a Strange Land.

The story - silly technician looses his garage corporation predictably to greedy woman and former business partner - wasn't very good with all that implausible back and forth through time and hibernated sleep. RAH rode that SF trope but didn't motivate it well enough; a lot of less riskier and far easier solutions to the protagonist's problems lay on hands. Especi
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S.C. Jensen
Apr 20, 2012 S.C. Jensen rated it really liked it  ·  review of another edition
I didn't read this book with the intention of writing a review, so you'll excuse me if I don't go into great detail. Let me just summarize "the feel" of the book...

It is not very often that I read a book that makes me smile the entire time I'm reading it; this is one of them. From the hilarious anachronisms of the 1950's Futurist to the brilliant side-kick cat, Pete. (Cat lovers will appreciate this book on a completely different level than other readers). I was laughing out loud at least once e
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Steve
Mar 22, 2008 Steve rated it did not like it  ·  review of another edition
This review has been hidden because it contains spoilers. To view it, click here.
Valerie
Nov 16, 2012 Valerie rated it really liked it  ·  review of another edition
Shelves: science-fiction
For today's standards it is a rather short novel with Heinlein still in his early stage, trying to develop the style that later led to his major works, and short is better in this case. It is told first person perspective and this makes things difficult for the narrative part but better for the introspective one.
There are no discussions of time travel issues or paradoxes to be solved, still the book is enjoyable, but if you want science fiction with any depth or emotional resonance, don't expect
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Derek
I first read this many years ago—probably about the time in which it is set: it was published in 1957 (just before I was born) but most of the story is set in 1970 and the rest in 2000/2001. The only thing that really stayed in my memory was the reason for the title.

Dan Davis once lived in Connecticut in a house with twelve doors to the outside. In Winter, his cat Pete (Petronius the Arbiter) would make him open every door, looking for the one that led to Summer. Pete's not present for the
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Eilonwy

Three and a half stars, so I guess my four stars will stand.

I read this as a teenager and have always remembered it as a love story. And I still think that. The difference is, this time I'm certain that the "love story" in this book is between narrator Dan and his cat, Pete, and definitely not between Dan and (view spoiler). The devotion and concern that Dan shows for his cat across time and distance i
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Stuart
The Door Into Summer: A charming time-travel story from Golden Age Heinlein
Originally posted at Fantasy Literature
The Door Into Summer (1957) is an immensely enjoyable time-travel story told effortlessly by Robert A. Heinlein long before he turned into a crotchety, soap-box ranting old crank who had a very unhealthy obsession with free love and characters going back in time to hook up with their mothers (gross!!).

So back to this book. It’s the story of Daniel Davis, a hard-working engineer in 1
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Amy
Time travel type: Travel to the past via machine and travel to the future via cryogenics.
Likes: Pete, the cat ... and robots.
Dislikes: All the characters except the cat ... and robots.
Points of Particular Boredom: Business talk and the hero's pompous over-confidence in himself.
Plot summary: Why bother?
Marcos
Oct 29, 2014 Marcos rated it liked it  ·  review of another edition
Y por fin, con algo de demora, me termino la lectura.

Primera lectura de Heinlein y la he acabado bastante contento. Una lectura muy amena en la que no ha habido momento para el aburrimiento... de hecho la novela es relativamente corta y se agradece que no añadan cientos de páginas de "paja".

La historia del libro toca uno de los clichés típicos del género, los viajes temporales. Pese a no ser gran fan de este tipo de novelas lo cierto es que me ha parecido original. La única pega que le podría en
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Simon
Jun 26, 2015 Simon rated it really liked it  ·  review of another edition
Shelves: sf-masterworks, sf
This is a very accessible and entertaining Heinlein read.

It is set in what was then a couple of decades into the future: 1970. The protagonist ends up travelling 30 years into his future by means of a cryogenic sleep to wake up in the year 2000. Reading this book in the year 2015 gives one quite a different perspective than one would have had reading it when it first came out. One can look back and judge how the authors vision of those years diverged from reality.

This is an optimistic book. Op
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Valeroo
If ever I own a Cat his name will be Pete, for short.
Mitticus
2,5 traveling stars

Where Daniel Davis never give up his search for the Door into Summer



O donde el gato Pete (aka Petronius the Arbiter) se roba el libro, tomando Ginger Ale y mostrando más firmeza de caracter que el humano.*cofpalizacof*

Coincido con Eilonwy en que lo mejor de la historia es la relación de Dan y Pete, y la devoción que siente por éste. Lo más que le preocupa es no dejar abandonado a su gato a su suerte, y hasta llevarlo consigo en el Sueño Frio.

Porque aparte de eso, cuesta muchis
...more
Tfitoby
Oct 12, 2011 Tfitoby rated it liked it  ·  review of another edition
Shelves: sci-fi
Even for a novice Heinlein reader such as myself it was clear that this was one of his early adult novels. It's light on the philosophy and social commentary, light on pages and is a simple, enjoyable read.

There are a few interesting scientific advances put forward in the 190 pages, one of the fun aspects of reading classic science fiction, but the most fun is reading what they couldn't imagine. If ever you want confirmation of some of the great things we have access to in the 21st century you o
...more
Nikki
I haven't previously managed to get through any of Heinlein's work, but I am nothing if not determined, so I finally picked this up and decided to have a jolly good go. And it was okay. The style is easy to read, conversational; matter of fact, even. It's almost not like reading a story, except of course you know that few of Heinlein's predictions work out (though he did predict the Roomba).

It's an interesting take on cold sleep/time travel, and a personal one. Dan isn't saving the world, he's j
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Kandice
Heinlein is a standard for old sci-fi. I think I may have read this before, but the reread was still enjoyable. Until the end. I always really get a kick out of vintage sci-fi where the author makes predictions for the future. It's especially fun when some of those predictions are almost correct. Heinlein foretells debit cards, for instance, even though he describes them in a cumbersome way.

What kept me from giving this little gem the five stars I feel the writing itself actually deserves is the
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Jim
Oct 23, 2014 Jim rated it really liked it  ·  review of another edition
I liked most of Heinlein's older stuff. Once he wrote "The Number of the Beast" he started writing too weird for me. This was one of his better ones. It is the first that I recall with a cat in it (he seems to have a reverence for cats) & an inventor who is a pretty smart guy but can still get himself into a world of trouble - and then back out again. Fun, quick read.
Qeti
Jan 07, 2016 Qeti rated it really liked it  ·  review of another edition
გულწრფელად ვფიქრობ, რომ Predestination-ზე უკეთესი რამ დროში მოგზაურობის თემაზე არც ჰაინლაინს და არც რომელიმე სხვა ავტორს არ დაუწერია, იმდენად პარადოქსული და შოკისმომგვრელი რამ იყო ^^ ამიტომ "კარი ზაფხულში", სადაც აგრეთვე დროში მოგზაურობის თემატიკაა, იმდენად აღარ მომეწონა. თუმცა, თავისთავად საინტერესო წიგნია, სწრაფად იკითხება, გემრიელი სასუსნავივით, ან აზარტში შემყვანი სერიალივით.

სერიალზე გამახსენდა. ბოროტ და "გათახსირებულ" ყოფილ შეყვარებულსა და ყოფილ მეგობარზე სამართლიანი შურისძიების, ნიშნისმოგ
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Stephen
2.5 stars. Not a bad book, but not one of my favorite Heinlein stories. Still, overall it was a fast, decent read and I didn't regret having picked it up.
Ugur
The Door into Summer is written by Robert A. Heinlein in 1957. Robert Heinlein wrote the complete novel in 13 days.

I’ve previously read a few Heinlein books, but could not love most of them. But this novel is different than others, the story is not so complicated or original but it is enjoyable to read it.

Main character Daniel Boon Davis uses the long sleep technology which preservers your body in a frozen state. He will be frozen in 1970 and planned to wake in 2000. When he awoke, he could not
...more
Glynn
Oct 13, 2012 Glynn rated it liked it  ·  review of another edition
Shelves: fiction
This review has been hidden because it contains spoilers. To view it, click here.
Chris
Oh, 1950s science fiction - is there nothing you can't do?

One of the downsides to our modern information age is that we have so much information available to us. If I see a reference on a blog or in a book that I don't know, it's a quick hop over to Google or Wikipedia to find out what it is, and if it's really interesting I can find myself learning about something I never knew before. And so, if I want to know more about cold sleep, robotics or time travel, there's a whole host of ways that I c
...more
Maree
Aug 12, 2011 Maree rated it really liked it  ·  review of another edition
The first time I read this book was years ago at the suggestion of a boyfriend and I don't know if that colored my opinion of the book or what, but I thought it was merely okay/didn't really like it. But in rereading, I find I have a much better opinion of the book and I'm not sure if it's just that I understand it better, having had that first experience, or if my tastes have changed since then (in boyfriends as well as books ;).

The Door into Summer is a classic time displacement novel and I ve
...more
Tomislav Tomašević
Prava knjiga za ulazak u Novu godinu.
Motiv "hladnog sna" i jednosmjerno - dvosmjernog putovanja kroz vrijeme zadržava pozornost čitatelja sve do kraja. Iako je neke stvari moguće pretpostaviti prije samog kraja, pripovjedački stil Heinleina nadoknađuje sve nedostatke i potvrđuje činjenicu da se radi o jednom od najboljih SF pisaca.
Sposobnost koncentriranja priče na "običnog malog" čovjeka stavljenog u neobičnu situaciju je ono što cjelinu čini kvalitetnom i svakako vrijednom čitanja.
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Robert Anson Heinlein was an American novelist and science fiction writer. Often called "the dean of science fiction writers", he is one of the most popular, influential, and controversial authors of "hard science fiction".

He set a high standard for science and engineering plausibility and helped to raise the genre's standards of literary quality. He was the first SF writer to break into mainstre
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“I have spent too much of my life opening doors for cats—I once calculated that, since the dawn of civilization, nine hundred and seventy-eight man-centuries have been used up that way. I could show you figures.” 14 likes
“Nothing could go wrong because nothing had...I meant "nothing would." No - Then I quit trying to phrase it, realizing that if time travel ever became widespread, English grammar was going to have to add a whole new set of tenses to describe reflexive situations - conjugations that would make the French literary tenses and the Latin historical tenses look simple.” 10 likes
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