All Socialism involves slavery.

There is a principle which is a bar against all information, which cannot fail to keep a man in everlasting ignorance-that principle is contempt prior to investigation.

The great aim of education is not knowledge but action.

The wise man must remember that while he is a descendant of the past, he is a parent of the future.

The society exists for the benefit of its members; not its members for the benefit of the society.

No one can be perfectly free till all are free; no one can be perfectly moral till all are moral; no one can be perfectly happy till all are happy.

Hero-worship is strongest where there is least regard for human freedom.

This survival of the fittest implies multiplication of the fittest.

Be bold, be bold, and everywhere be bold.

Civilization is a progress from an indefinite, incoherent homogeneity toward a definite, coherent heterogeneity.

Those who have never entered upon scientific pursuits know not a tithe of the poetry by which they are surrounded.

Love betrayed has an entirely different sound from hatred outright.

I fancy that most people who think at all have done a great deal of their thinking in the first fourteen years.

My plan is to not be leading (worship) at any church until I really feel like I'm supposed to be somewhere else.

It's an old story, really: seduced and corrupted, in the end, by an obsessive love for the text.

Ye great teachers: listen to what you say!

People will complain that they don't want to wait around for lightning to strike, but why not? If you invest yourself in chance, the potential for disappointment is pretty low.

I'm not a fast, stream-of-consciousness lyricist at all - I know some guys who are, and if there is one skill I wish I had, it's that.

I like to say there's certain things you can't take back: One of them is 'I love you,' and one of them is bullets.

To walk into the Jefferson memorial is to be in a temple of the pure idolatry of reason

Dream your dreams with open eyes and make them come true.