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If you can’t say it simply and clearly, keep quiet, and keep working on it till you can.

Karl Popper

Science is most significant as one of the greatest spiritual adventures that man has yet known.
KARL POPPER

Adventure Greatness Man Science Spiritual
I hold that he who teaches that not reason but love should rule opens up the way for those who rule by hate.
KARL POPPER

Hate Love Myself Philosophy Teaching
All life is problem-solving.
KARL POPPER

Life One Liner Philosophy
The game of science is, in principle, without end.
KARL POPPER

End Game One Liner Principle Science
A theory that explains everything, explains nothing.
KARL POPPER

One Liner Philosophy Theory
The future depends on ourselves, and we do not depend on any historical necessity.
KARL POPPER

Future History Necessary Ourselves
And it implies that if we respect truth, we must search for it by persistently searching for our errors: by indefatigable rational criticism, and self-criticism.
KARL POPPER

Philosophy Respect Search Truth
Those who promise us paradise on earth never produced anything but hell.
KARL POPPER

Hell Philosophy
History has no meaning.
KARL POPPER

History One Liner
The quest for precision is analogous to the quest for certainty, and both should be abandoned.
KARL POPPER

Abandonment Mystery Philosophy
The aim of argument, or of discussion, should not be victory but progress.
KARL POPPER

Argument Progress Victory Win
If our civilization is to survive, we must break with the habit of deference to great men.
KARL POPPER

Break Greatness Men Ourselves Survive
It is not the consciousness of man that determines his existence – rather, it is his social existence that determines his consciousness.
KARL POPPER

Existence Man Philosophy Spiritual
We must plan for freedom, and not only for security, if for no other reason than only freedom can make security more secure.
KARL POPPER

Freedom Philosophy Reason Security
“We don’t know anything” and believed that this was the most important philosophical truth.
KARL POPPER

Believe Important Philosophy Truth
The simple truth is that truth is hard to come by, and that once found may easily be lost again.
KARL POPPER

Easy Hard Lost Philosophy Simplicity Truth

If you can’t say it simply and clearly, keep quiet, and keep working on it till you can.

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If you can’t say it simply and clearly, keep quiet, and keep working on it till you can.

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