The cardinal virtue of a teacher [is] to protect the pupil from his own influence.

Tobacco, coffee, alcohol, hashish, prussic acid, strychnine, are weak dilutions. The surest poison is time.

A good symbol is the best argument, and is a missionary to persuade thousands.

The consciousness in each man is a sliding scale, which identifies him now with the First Cause, and now with the flesh of his body; life above life, in infinite degrees.

The human heart concerns us more than the poring into microscopes, and is larger than can be measured by the pompous figures of the astronomer.

Man was born to be rich, or grow rich by use of his faculties, by the union of thought with nature. Property is an intellectual production. The game requires coolness, right reasoning, promptness, and patience in the players.

The resources of the scholar are proportioned to his confidence in the attributes of the intellect.