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No rational argument will have a rational effect on a man who does not want to adopt a rational attitude.

Karl Popper

No rational argument will have a rational effect on a man who does not want to adopt a rational attitude.
KARL POPPER

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

Believe Important Philosophy Truth
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
The wise man belongs to all countries, for the home of a great soul is the whole world.
KARL POPPER

Greatness Home Man Philosophy Soul Spiritual Wisdom World
Those who promise us paradise on earth never produced anything but hell.
KARL POPPER

Hell Nature Promise
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 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 complete nihilism to propose laying down arms in a world where atom bombs are around. It is very simple: there is no way of achieving peace other than with weapons.
KARL POPPER

Achieve Peace Simplicity Weapon World
Theories are nets cast to catch what we call ‘the world’: to rationalize, to explain, and to master it. We endeavor to make the mesh ever finer and finer.
KARL POPPER

Fine Perfection Theory World
In philosophy methods are unimportant; any method is legitimate if it leads to results capable of being rationally discussed.
KARL POPPER

Important Philosophy Result
Science may be described as the art of systematic oversimplification.
KARL POPPER

Art Science Simplicity
In so far as a scientific statement speaks about reality, it must be falsifiable: and in so far as it is not falsifiable, it does not speak about reality.
KARL POPPER

Philosophy Reality Science Speak
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
Our knowledge can only be finite, while our ignorance must necessarily be infinite.
KARL POPPER

Deep Knowledge Necessary Philosophy
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
Always remember that it is impossible to speak in such a way that you cannot be misunderstood: there will always be some who misunderstand you.
KARL POPPER

Impossible Philosophy Remember Speak Yourself
A theory that explains everything, explains nothing.
KARL POPPER

One Liner Philosophy Theory
It is wrong to think that belief in freedom always leads to victory; we must always be prepared for it to lead to defeat. If we choose freedom, then we must be prepared to perish along with it.
KARL POPPER

Believe Choice Freedom Lost Philosophy Prepare Thinking Victory Wrong
Theology, I still think, is due to a lack of faith.
KARL POPPER

Faith One Liner Thinking
“It can’t happen here” is always wrong: a dictatorship can happen anywhere.
KARL POPPER

Politics Wrong
The most we can say of democracy or freedom is that they give our personal abilities a little more influence on our well-being.
KARL POPPER

Ability Democracy Freedom
Those who promise us paradise on earth never produced anything but hell.
KARL POPPER

Hell Philosophy
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
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
Science must begin with myths, and with the criticism of myths.
KARL POPPER

Beginning Science
The aim of argument, or of discussion, should not be victory but progress.
KARL POPPER

Argument Progress Victory Win
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

Call Decision Game Himself Science

No rational argument will have a rational effect on a man who does not want to adopt a rational attitude.

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No rational argument will have a rational effect on a man who does not want to adopt a rational attitude.

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