I think and think for months and years. Ninety-nine times, the conclusion is false. The hundredth time I am right.

Berlin is the place to which I am most closely bound by human and scientific ties.

It is just as important to make knowledge live and keep it alive as to solve specific problems.

Our defense is not in our armaments, nor in science, nor in going underground. Our defense is in law and order.

The first and most important necessity is the creation of a modus vivendi with the Arab people.

Experience alone can decide on truth.

If a man aspires towards a righteous life, his first act of abstinence is from injury to animals.