Pervading all nature we may see at work a stern discipline , which is a little cruel that it may be very kind.

Only when Genius is married to Science can the highest results be produced.

The ultimate result of shielding men from the effects of folly, is to fill the world with fools.

If men use their liberty in such a way as to surrender their liberty, are they thereafter any the less slaves? If people by a plebiscite elect a man despot over them, do they remain free because the despotism was of their own making?

The child takes most of his nature of the mother, besides speech, manners, and inclination.

Agnostics are people who, like myself, confess themselves to be hopelessly ignorant concerning a variety of matters, about which metaphysicians and theologians, both orthodox and heterodox, dogmatize with the utmost confidence.

A function to each organ, and each organ to its own function, is the law of all organization.