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A generation which ignores history has no past —and no future.

— Robert A. Heinlein Time Enough for Love (1973)

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More quotes by Robert A. Heinlein

Love is the condition in which the happiness of another person is essential to your own.

Stranger in a Strange Land (1961)

“My uncle used to say, ‘Never pick up a stray kitten…unless you’ve already made up your mind to be owned by it.’”

The Cat Who Walks Through Walls (1985)

I have never been able to see life as anything but a vast complicated practical joke, and it’s better to laugh than cry.

I Will Fear No Evil (1970)

If you would know a man, observe how he treats a cat.

The Door Into Summer (1957)

It seemed to John that most of the older people in the world spent much of their time not listening.

The Star Beast (1954)

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From now on, everything in life will appear blurry to me. What’s the point of wiping my glasses when my vision has already left me?"

Sanu Sharma

You can never plan the future by the past.

Edmund Burke A Letter to a Member of the National Assembly (1791)

Nothing is there to come, and nothing past,
But an eternal now does always last.

Abraham Cowley Poems (1656)

The most important thing I learned on Tralfamadore was that when a person dies he only appears to die.

Kurt Vonnegut Slaughterhouse-Five (1969)

Attribution

Quote text and notes from Wikiquote: Robert A. Heinlein (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.