The Door Into Summer

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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, Dan was tricked by an unscrupulous greedy business partner and a greedier fiancee into spending thirty years in suspended animation, the long sleep, just when he was on the verge of a success beyond his wildest dreams.

They never imagine that the future time in which Dan, a modern-day and future-time, Rip Van Winkle, will awaken has mastered time travel, giving him a way to get back to them, and at them, and get his revenge!.

304 pages, Paperback

First published January 1,1957

About the author

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Robert Anson Heinlein was an American science fiction author, aeronautical engineer, and naval officer. Sometimes called the "dean of science fiction writers", he was among the first to emphasize scientific accuracy in his fiction, and was thus a pioneer of the subgenre of hard science fiction. His published works, both fiction and non-fiction, express admiration for competence and emphasize the value of critical thinking. His plots often posed provocative situations which challenged conventional social mores. His work continues to have an influence on the science-fiction genre, and on modern culture more generally.
Heinlein became one of the first American science-fiction writers to break into mainstream magazines such as The Saturday Evening Post in the late 1940s. He was one of the best-selling science-fiction novelists for many decades, and he, Isaac Asimov, and Arthur C. Clarke are often considered the "Big Three" of English-language science fiction authors. Notable Heinlein works include Stranger in a Strange Land, Starship Troopers (which helped mold the space marine and mecha archetypes) and The Moon Is a Harsh Mistress. His work sometimes had controversial aspects, such as plural marriage in The Moon Is a Harsh Mistress, militarism in Starship Troopers and technologically competent women characters who were formidable, yet often stereotypically feminine—such as Friday.
Heinlein used his science fiction as a way to explore provocative social and political ideas and to speculate how progress in science and engineering might shape the future of politics, race, religion, and sex. Within the framework of his science-fiction stories, Heinlein repeatedly addressed certain social themes: the importance of individual liberty and self-reliance, the nature of sexual relationships, the obligation individuals owe to their societies, the influence of organized religion on culture and government, and the tendency of society to repress nonconformist thought. He also speculated on the influence of space travel on human cultural practices.
Heinlein was named the first Science Fiction Writers Grand Master in 1974. Four of his novels won Hugo Awards. In addition, fifty years after publication, seven of his works were awarded "Retro Hugos"—awards given retrospectively for works that were published before the Hugo Awards came into existence. In his fiction, Heinlein coined terms that have become part of the English language, including grok, waldo and speculative fiction, as well as popularizing existing terms like "TANSTAAFL", "pay it forward", and "space marine". He also anticipated mechanical computer-aided design with "Drafting Dan" and described a modern version of a waterbed in his novel Beyond This Horizon.
Also wrote under Pen names: Anson McDonald, Lyle Monroe, Caleb Saunders, John Riverside and Simon York.

Community Reviews

Rating(3.9 / 5.0, 100 votes)
5 stars
24(24%)
4 stars
37(37%)
3 stars
39(39%)
2 stars
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1 stars
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100 reviews All reviews
March 26,2025
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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.
March 26,2025
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Сюжет : Чи справді це кінець? Ні! Ден не здається. Він має врятувати двох істот, які йому дорогі: кота, що вірить у двері до літа навіть взимку, і ту, чиє кохання та віра дають йому сили. Мої враження : "Двері у літо" - це не просто науково-фантастичний роман. Це захоплива історія про людську стійкість, силу кохання та віри. Гайнлайн майстерно поєднує динамічний сюжет з глибокими філософськими роздумами про сенс життя, дружбу, зраду та прощення. Особливості : Динамічний сюжет, який тримає в напрузі до самого кінця.Яскраві та цікаві персонажі.Глибокі філософські роздуми про сенс життя . Елементи наукової фантастики, що роблять історію ще більш захоплюючою. Мені в книзі все сподобалося атмосфера, сюжет і персонажі. Плюс що мені в книзі сподобалося ще те що головний персонаж вчений - інженер , персонажі в книгах і коміксах та навіть фільмах моє все. "Двері у літо" - це книга, яка сподобається любителям наукової фантастики, а також тим, хто цінує динамічні сюжети, глибокі думки та цікаві персонажі."Двері у літо" - це захоплива історія, яка змусить вас задуматися над сенсом життя, цінністю дружби та силою кохання.
March 26,2025
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An amusing, lighthearted time travel romp, with a particular appeal for cat lovers. I don't know there was much here of real interest, apart from some of Heinlein's musings in the last few pages on the nature of free will, determinism and the existence, or not, of multiple universes. Also intriguing was his notion that the laws of the universe are capable of enforcing themselves, without any help needed from us humans, giving us a kind of free pass from worrying about paradoxes and the like resulting from time travel.
March 26,2025
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Liked this book way more than his more famous The Puppet Masters and Starship Troopers. It was light-hearted and whimsical, though quite a bit outdated.
March 26,2025
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Всі три зірочки Піту, котику, який п'є імбирний ель. Для винахідливого гг, який придумав спосіб як одружитися з дитиною, зірок немає
March 26,2025
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4⭐️

Для свого часу Гайнлайн добре писав, і це цікаво читати навіть зараз. Ну не дарма ж його дотепер вважають найкращим у цій ніші!

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March 26,2025
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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 story at all. It was fun, and it was refreshing to read such innocent prose.

Although some people might be offended, there was some narrative that would be considered non-PC these days, but was just part of life in the 'fifties. I actually found that quite refreshing too. I get so irritated by the over-sensitivity to political correctness these days. You can't even tell a good Irish joke, or drop your pants in a US bar to proudly show off your British tattoo, these days, without drawing comments from the puritans.

The story was great right up until the final chapter. This was a bit of a damp squib, Heinlein felt that his hero had to justify and explain his actions and how several instances of himself could coexist. I would have been far more satisfied with the explosive ending which could so easily have been there.

Having said that, I would strongly recommend this book to all lovers of time travel and sci-fi books.
March 26,2025
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4.5⭐

Непогана і дуже проста наукова фантастика, цікаві повороти сюжета, які тримають в інтризі, але деякі моменти я все ж таки передбачила

Дуже підійде тим, хто тільки хоче увійти в жанр наукової фантастики – бо дуже легкий вхід і доволі простий сюжет
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