The only source of knowledge is experience.

The pursuit of knowledge for its own sake, an almost fanatical love of justice and the desire for personal independence -- these are the features of the Jewish tradition which make me thank my stars that I belong to it.

There is no salvation for civilization, or even the human race, other than the creation of a world government.

The Bible is a great source of wisdom and consolation and should be read frequently.

The armament industry is indeed one of the greatest dangers that beset mankind. It is the hidden evil power.

It is open to every man to choose the direction of his striving; and also every man may draw comfort from Lessing's fine saying, that the search for truth is more precious than its possession.

It is a precarious undertaking to say anything reliable about aims and intentions.