Liberty is the condition of progress. Without Liberty, there remains only barbarism. Without Liberty, there can be no civilization.

We all know that men in moderate circumstances can have just as comfortable houses as the richest, just as comfortable clothing, just as good food. They can see just as fine paintings, just as marvelous statues, and they can hear just as good music. They can attend the same theaters and the same operas. They can enjoy the same sunshine, and above all, can love and be loved just as well as kings and millionaires.

Intellectual liberty [is] the right to think right and the right to think wrong. Thought is the means by which we endeavor to arrive at truth.

Orthodox Christians have the habit of claiming all great men, all men who have held important positions, men of reputation, men of wealth. As soon as the funeral is over clergymen begin to relate imaginary conversations with the deceased, and in a very little while the great man is changed to a Christian - possibly to a saint.

Any doctrine that will not bear investigation is not a fit tenant for the mind of an honest man.

In the republic of mediocrity, genius is dangerous.

If, with all the time at my disposal, with all the wealth of the resources of this vast universe, to do with as I will, I could not produce a better scheme of life than now prevails, I would be ashamed of my efforts and consider my work a humiliating failure.