In a sense, knowledge shrinks as wisdom grows: for details are swallowed up in principles.

The art of progress is to preserve order amid change and to preserve change amid order.

Every epoch has its character determined by the way its population reacts to the material events which they encounter.

In formal logic, a contradiction is the signal of defeat, but in the evolution of real knowledge it marks the first step in progress toward a victory.

The mentality of mankind and the language of mankind created each other. If we like to assume the rise of language as a given fact, then it is not going too far to say that the souls of men are the gift from language to mankind. The account of the sixth day should be written: He gave them speech, and they became souls.

Education is the acquisition of the art of the utilisation of knowledge.

It requires a very unusual mind to undertake the analysis of the obvious.