A civilization is a heritage of beliefs, customs, and knowledge slowly accumulated in the course of centuries, elements difficult at times to justify by logic, but justifying themselves as paths when they lead somewhere, since they open up for man his inner distance.

Knowledge rests not upon truth alone, but upon error also.

Science is organized knowledge. Wisdom is organized life.

The degree of one's emotions varies inversely with one's knowledge of the facts.

Happiness exists on earth, and it is won through prudent exercise of reason, knowledge of the harmony of the universe, and constant practice of generosity.