Constant labor of one uniform kind destroys the intensity and flow of a man's animal spirits, which find recreation and delight in mere change of activity.

The true law of economics is chance, and we learned people arbitrarily seize on a few moments and establish them as laws.

The working men have no country. We cannot take away from them what they have not got

You will have to go through 15, 20, 50 years of civil wars and national struggles not only to bring about a change in society but also to change yourselves, and prepare yourselves for the exercise of political power.

The product of mental labor - science - always stands far below its value, because the labor-time necessary to reproduce it has no relation at all to the labor-time required for its original production.

The social revolution...cannot draw its poetry from the past, but only from the future. It cannot begin with itself before it has stripped itself of all superstitions concerning the past.

Follow your own path, no matter what people say.