If a dog jumps into your lap, it is because he is fond of you; but if a cat does the same thing, it is because your lap is warmer.

We must not expect simple answers to far-reaching questions. However far our gaze penetrates, there are always heights beyond which block our vision.

Mathematics, in its widest significance, is the development of all types of formal, necessary, deductive reasoning.

Human life is driven forward by its dim apprehension of notions too general for its existing language.

The antithesis between a technical and a liberal education is fallacious. There can be no adequate technical education which is not liberal, and no liberal education which is not technical.

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.

You cannot be wise without some basis of knowledge, but you may easily acquire knowledge and remain bare of wisdom.