If we wish our civilization to survive we must break with the habit of deference to great men.
Interpretation
We need to challenge the authority of influential figures to ensure the survival and progress of our society.
Karl Popper argues that blindly following powerful figures can hinder civilization's growth and survival. Instead, he encourages critical thinking and skepticism towards authority, suggesting that true progress stems from questioning the status quo rather than deferring to those deemed great.
In practice
This quote can be used in a speech about the importance of independent thinking in society.
The growth of our knowledge is the result of a process closely resembling what Darwin called 'natural selection'; that is, the natural selection of hypotheses: our knowledge consists, at every moment, of those hypotheses which have shown their (comparative) fitness by surviving so far in their struggle for existence, a competitive struggle which eliminates those hypotheses which are unfit.
If you can't say it simply and clearly, keep quiet, and keep working on it till you can.
No particular theory may ever be regarded as absolutely certain.... No scientific theory is sacrosanct.
The belief in a political Utopia is especially dangerous. This is possibly connected with the fact that the search for a better world, like the investigation of our environment, is (if I am correct) one of the oldest and most important of all the instincts.
A rationalist is simply someone for whom it is more important to learn than to be proved right; someone who is willing to learn from others - not by simply taking over another's opinions, but by gladly allowing others to criticize his ideas and by gladly criticizing the ideas of others
Thus science must begin with myths, and with the criticism of myths; neither with the collection of observations, nor with the invention of experiments, but with the critical discussion of myths, and of magical techniques and practices.
The old saying of the two kinds of truth. To the one kind belongs statements so simple and clear that the opposite assertion obviously could not be defended. The other kind, the so-called 'deep truths', are statements in which the opposite also contains deep truth.
I do not believe that civilizations have to die because civilization is not an organism. It is a product of wills.
To my mind, faith is like being in the sun. When you are in the sun, can you avoid creating a shadow? Can you shake that area of darkness that clings to you, always shaped like you, as if constantly to remind you of yourself? You can’t. This shadow is doubt. And it goes wherever you go as long as you stay in the sun. And who wouldn’t want to be in the sun?
That one plant should be sown and another be produced cannot happen; whatever seed is sown, a plant of that kind even comes forth.
All that you see out in front of you is how you feel inside your head.
I see clearly that the thing the church needs most today is the ability to heal wounds and to warm the hearts of the faithful; it needs nearness, proximity. I see the church as a field hospital after battle... The church sometimes has locked itself up in small things, in small-minded rules. The most important thing is the first proclamation: Jesus Christ has saved you.
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