...it is all the more clear what we have to accomplish at present: I am referring to ruthless criticism of all that exists, ruthless both in the sense of not being afraid of the results it arrives at and in the sense of being just as little afraid of conflict with the powers that be.

Moments are the elements of profit

A heavy or progressive or graduated income tax is necessary for the proper development of Communism.

Labor in the white skin can never free itself as long as labor in the black skin is branded.

Science and democracy are the right and left hands of what I'll refer to as the move from the realm of necessity to the realm of freedom.

Every provisional political set-up following a revolution requires a dictatorship, and an energetic dictatorship at that.

So far no chemist has ever discovered exchange-value either in a pearl or a diamond.