The seeds of civilization are in every culture, but it is city life that brings them to fruition.

Fire is a natural symbol of life and passion, though it is the one element in which nothing can actually live.

The historian does not locate known facts in a hypothetical, general pattern of processes; his aim is to link fact to fact, one unique knowable event to another individual one that begot it.

The way a question is asked limits and disposes the ways in which any answer to it-right or wrong-may be given.

Language is, without a doubt, the most momentous and at the same time the most mysterious product of the human mind.

Speech is the mark of humanity. It is the normal terminus of thought.

The world of physics is essentially the real world construed by mathematical abstractions, and the world of sense is the real world construed by the abstractions which the sense-organs immediately furnish. To suppose that the "material mode" is a primitive and groping attempt at physical conception is a fatal error in epistemology.