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A Porta Para o Verão
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A Porta Para o Verão

really liked it 4.0  ·  Rating details ·  18,892 Ratings  ·  886 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 June 1st 1957)
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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
Feb 19, 2012 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
Aug 02, 2011 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
Well after many thousands of ratings this book is averaging 4 stars so my rating will make no difference at all.
I first read this back in the late 70s, and like most of Heinlein's early and middle work I really enjoyed it then and again now.
The storyline and characterisations are good and there is none of the (in my opinion) vague sexism and verbal meanderings of his later books (look how many pages his later novels have, yawn).

Ok I've just re-read my review and whilst I thoroughly enjoyed the
Lance Greenfield
Sep 27, 2012 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
S.C. Jensen
Apr 17, 2012 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
Feb 16, 2009 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...
Ivana Books Are Magic
Are you a cat person? If yes, you’re definitely in for a treat. Pete is an amazingly written cat character if there ever was one. Yes, cat lovers will surely appreciate this one. Cat owners will understand that cats like Pete are as rare as true love and only come once in a life time, if we’re lucky, hence they will understand what makes Pete so special to Dan, his owner. However, even if you happen to hate cats, I’m sure you’ll appreciate the ingenious way Pete is described. That’s just plain g ...more
Mar 22, 2008 rated it did not like it  ·  review of another edition
This review has been hidden because it contains spoilers. To view it, click here.
May 19, 2013 rated it liked it  ·  review of another edition
Shelves: scifi, 2fiction, 1audio
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
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 th
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?
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
Dec 30, 2015 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
Nov 25, 2014 rated it really liked it  ·  review of another edition
Shelves: time-travel

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
Nov 04, 2012 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
Javier Muñoz
Jun 12, 2016 rated it really liked it  ·  review of another edition
Shelves: best-sci-fi
Cuando leo una novela de la edad de oro de la ciencia ficción, suelo verla de forma crítica, normalmente están muy bien escritas (con una prosa más elaborada que las actuales), pero casi siempre contienen elementos anacrónicos, cosas que a un escritor actual no se le ocurrirían porque simplemente el tiempo ha hecho que ciertas ideas resulten absurdas y sin sentido.

No voy a negar que con este libro me pasa también, pero la cuestión es que el optimismo y la ingenuidad que desprende hace que le per
Travis Hutch Belushi
A very fast paced story line with drama for days. 'The Door Into Summer' was written in 1957 with the plots story based between 1970 - 2001. Robert A. Heinlein had to do a lot of predicting to paint a believable world set in 2001 in which he succeeds creating a believable account of time travel which isn't over the top or far fetched as most time travel novels seem to be. The main character Dan Davis is extremely well written, charismatic, smart, wise and quick witted, making him very enjoyable ...more
Tatuka Zhgenti
Aug 03, 2017 rated it it was amazing  ·  review of another edition
ყველაფერს რომ თავი დავანებოთ, ამ წიგნმა საბოლოოდ შემაყვარა კატები.
Sep 13, 2013 rated it it was amazing  ·  review of another edition
Shelves: favoritos, reread, sci-fi
Después de muchísimos años de leerla, en mi segunda lectura del texto, me sigue pareciendo una magnifica novela del gran autor Robert A. Heilein....ya decía Asimov que envidiaba la pluma del escritor por su dinamismo, y es que Heinlein es grande por muchas cosas, pero sobretodo, por no querer atiborrar a lector del 'material refinado' en sus narraciones para que éste sepa lo listo que es y cuanto sabe (cosa de la que pecan casi todos su contemporáneos; Asimov, K. Dick..), lo que hace que la obra ...more
Jan 20, 2015 rated it it was ok  ·  review of another edition
Shelves: w_engineer
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
Jun 16, 2015 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
Oct 11, 2014 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
Jan 22, 2017 rated it really liked it  ·  review of another edition
,,თავისუფალი ნება და ბედისწერა, ორივე ჭეშმარიტებაა.მხოლოდ ერთი სამყარო არსებობს, ერთი წარსულითა და ერთი მომავლით... ,,აწ და მარადის უკუნითი უკუნისამდე''... სამყარო დასასრულის გარეშე.მხოლოდ ერთი სამყარო,რომელიც იმდენად რთულია,რომ თავის სქემებში თავისუფალ ნებასაც იტევს, დროში მოგზაურობასაც და ყველაფერ დანარჩენსაც. ბოლოს ისევ საკუთარ კარს უბრუნდები''.

ბიჭო ჰაინლაინ <3
If ever I own a Cat his name will be Pete, for short.
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
Jess Johnson
I have so much ambivalence about this book!!!

I have a soft spot for vintage Sci Fi that reminds me of hanging out with my dad and discussing some thing we both read in high school. I started this book and it was hitting all the right notes for me - protagonist with a quirky, strong, distinct voice and slightly wacky approximation of 'how the future works' -- there is one really fun line where he basically approximates reading on a kindle.

That said despite acknowledging this is an older book I ca
Jan 06, 2016 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
Debbie Zapata
Jan 29, 2015 rated it really liked it  ·  review of another edition
Shelves: saturday
We have machines that do the household drudgery better than any housewife ever could, Cold Sleep, time travel, clothes that fasten with Sticktite instead of zippers or buttons, a system of obtaining cash from our bank accounts by requesting it at certain machines, a cameo appearance by a young gentleman named Leonard Vincent who might very well have become someone much more well known, a vaguely creepy romance, and a nifty cat named Pete who drinks ginger ale. All wrapped up in Heinlein's fast-m ...more
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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
More about Robert A. Heinlein...

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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.” 18 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.” 11 likes
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