Freedom is absolutely necessary for the progress in science and the liberal arts.

Today the world changes so quickly that in growing up we take leave not just of youth but of the world we were young in.

The greatest threat to freedom is the absence of criticism.

Pleasure and freedom from pain, are the only things desirable as ends.

A people that values its privileges above its principles soon loses both.

Freedom in general may be defined as the absence of obstacles to the realization of desires.

When souls are great, the body wearies itself in pursuit of what they desire.

The search for human freedom can never be complete without freedom for women.

I never think of the future. It comes soon enough.

No power in society, no hardship in your condition can depress you, keep you down, in knowledge, power, virtue, influence, but by your own consent.