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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.

Karl Popper

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

Believe Important Philosophy Truth
Our knowledge can only be finite, while our ignorance must necessarily be infinite.
KARL POPPER

Deep Knowledge Necessary Philosophy
Instead of the greatest happiness for the greatest number, one should demand, more modestly, the least amount of avoidable suffering for all.
KARL POPPER

Avoid Demand Greatness Happiness Philosophy Prayer Suffering
The conspiracy theory of society, comes from abandoning God and then asking: “Who is in his place?”
KARL POPPER

Abandonment God Himself Place Spiritual Theory
Science must begin with myths, and with the criticism of myths.
KARL POPPER

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

Quiet Science Simplicity Yourself
The game of science is, in principle, without end.
KARL POPPER

End Game One Liner Principle Science
True ignorance is not the absence of knowledge, but the refusal to acquire it.
KARL POPPER

Knowledge Philosophy True
The method of learning by trial and error – of learning from our mistakes – seems to be fundamentally the same whether it is practiced by lower or by higher animals, by chimpanzees, or by men of science.
KARL POPPER

Animal Learning Man Mistakes Ourselves Science
In philosophy methods are unimportant; any method is legitimate if it leads to results capable of being rationally discussed.
KARL POPPER

Important Philosophy Result
The way of science is paved with discarded theories that were once declared self-evident.
KARL POPPER

Evidence Science Theory Way
Great men may make great mistakes.
KARL POPPER

Greatness Men Mistake One Liner
The future depends on ourselves, and we do not depend on any historical necessity.
KARL POPPER

Future History Necessary Ourselves
In my view, aiming at simplicity and lucidity is a moral duty of all intellectuals: lack of clarity is a sin, and pretentiousness is a crime.
KARL POPPER

Crime Duty Moral Myself Philosophy Simplicity Sin
If we are not prepared to defend a tolerant society against the onslaught of the intolerant, then the tolerant will be destroyed, and tolerance with them.
KARL POPPER

Deep Destroy Oppression Philosophy Prepare Tolerance

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.

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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.

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