Karl Popper on history

We must plan for freedom, and not only for security, if for no other reason than that only freedom can make security secure.

The game of science is, in principle, without end. He who decides one day that scientific statements do not call for any further test, and that they can be regarded as finally verified, retires from the game.

Scientists try to eliminate their false theories, they try to let them die in their stead. The believer⁠—whether animal or man⁠—perishes with his false beliefs.

History doesn’t repeat itself, but it does rhyme.

The man who has no sense of history, is like a man who has no ears or eyes.

Adolf Hitler1889–1945

There is nothing new in the world except the history you do not know.

Harry S. Truman1884–1972