Some laws of state aimed at curbing crime are even more criminal.

One day we shall certainly 'reduce' thought experimentally to molecular and chemical motions in the brain; but does that exhaust the essence of thought?

Freedom is the recognition of necessity.

In science, each new point of view calls forth a revolution in nomenclature.

In a political struggle of class against class, organization of trade unions is the most important weapon.

I have learned more [from Balzac] than from all the professional historians, economists, and statisticians put together.

Everything must justify its existence before the judgment seat of Reason, or give up existence.