1. “The opposite of a fact is falsehood, but the opposite of one profound truth may very well be another profound truth.”
2. “Everything we call real is made of things that cannot be regarded as real.”
3. “The very fact that knowledge is itself the basis for civilization points directly to openness as the way to overcome the present crisis.”
4. “You can recognize a small truth because its opposite is a falsehood. The opposite of a great truth is another truth.”
5. “Never express yourself more clearly than you able to think.”
6. “The Stone Age didn’t end because the World ran out of stones.”
7. “It is not enough to be wrong, one must also be polite.”
8. “The meaning of life consists in the fact that it makes no sense to say that life has no meaning.”
9. “Every sentence I utter must be understood not as an affirmation but as a question.”
10. “It is the hallmark of any deep truth its negation is also a deep truth.”
11. “Every great and deep difficulty bears in itself it’s own solution. It forces us to change our thinking in order to find it.”
12. “An expert is a person who has found out his own painful experience all the mistakes that one can make in a very narrow field.”
13. “There are some things so serious that you have to laugh at them.”
14. “The best weapon of a dictatorship is secrecy, but the best weapon of a democracy should be the weapon of openness.”
15. “There are trivial truths and there are great truths. The opposite of a trivial truth is plainly false. The opposite of a great truth is also true.”