Unable to access my local library thanks to Covid-19, I have been raiding my own bookshelves for reading material. I think this is a book I bought from the library at one of their book sales.
It's about a man who becomes linked to an alien via a creature they leave for aliens to find out in space, and this allows him to see what the alien's doing, and to learn about the alien's culture.
It's more of an intellectual read than, say, an action adventure story, which is what many science fiction stories tend to be these days.
What's most interesting about it is that it compares our human culture and upbringing with that of the aliens, who call themselves The Ruml. Also, the man mind-linked to the alien, an ordinary man called Jason Barchar, is a student interested in how animals behave, he's an anthropologist, if I remember correctly, and the entire story is based around his research that he does in an effort to understand the Ruml, and explain the differences between them and us, so that a coming invasion of the Ruml does not lead to war between the two races, solely because of a misunderstanding of cultures. That's it in a nutshell, anyway.
I enjoyed it because it emphasized understanding aliens - strangers, in other words - in an effort to prevent a possible war, and takeover of Earth.
You might almost say it's a metaphor for we humans to use when trying to understand other humans on this Earth who are different from us, whatever their differences may be.
If we understand what makes someone else tick, we can come to agreement with them, or make peace with them, whatever it is that we feel we need to do that involves both them and us.
Yes, as others say, some of the information in this book is a little old - the copy I read was printed in 1956, so that's to be expected - but, even so, we can still learn something from it.
I highly recommend this book to those who enjoy reading subjects such as psychology, or reading about totally different alien cultures, that are more or less on the same level as we are, and who are interested in the dynamics between different peoples, be they human or alien characters.