If every man has freedom to do all that he wills, provided he infringes not the equal freedom of any other man, then he is free to drop connection with the state-to relinquish its protection, and to refuse paying toward its support.

The most important attribute of man as a moral being is the faculty of self-control.

We must infer that a plant or animal of any species, is made up of special units, in all of which there dwells the intrinsic aptitude to aggregate into the form of that species: just as in the atoms of a salt, there dwells the intrinsic aptitude to crystallize in a particular way.‎

Life is not for learning nor is life for working, but learning and working are for life.

Music ministers to human welfare more than any other art.

An argument fatal to the communist theory, is suggested by the fact, that a desire for property is one of the elements of our nature.

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