In Science the paramount appeal is to the Intellect-its purpose being instruction; in Art, the paramount appeal is to the Emotions-its purpose being pleasure.

The true function of philosophy is to educate us in the principles of reasoning and not to put an end to further reasoning by the introduction of fixed conclusions.

Not only the individual experience slowly acquired, but the accumulated experience of the race, organized in language, condensed in instruments and axioms, and in what may be called the inherited intuitions--these form the multiple unity which is expressed in the abstract term "experience.

In complex trains of thought signs are indispensable.

The delusions of self-love cannot be prevented, but intellectual misconceptions as to the means of achieving success may be corrected.

Speak for yourself and from yourself, or be silent.

Good writers are of necessity rare.