From each according to his abilities, to each according to his needs.

The weapon of criticism can never replace the criticism of weapons.

Mankind always sets itself only such tasks as it can solve; since, looking at the matter more closely, we will always find that the task itself arises only when the material conditions necessary for its solution already exist or are at least in the process of formation.

When the sufferers learn to think, then the thinkers will learn to suffer.

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.

Money plays the largest part in determining the course of history.

By the aristocracy of finance must here be understood not merely the great loan promoters and speculators in public funds, in regard to whom it is immediately obvious that their interests coincide with the interests of the state power. All modern finance, the whole of the banking business, is interwoven in the closest fashion with public credit.