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.

The less you eat, drink and read books; the less you go to the theatre, the dance hall, the public house; the less you think, love, theorize, sing, paint, fence, etc., the more you save-the greater becomes your treasure which neither moths nor dust will devour-your capital. The less you are, the more you have; the less you express your own life, the greater is your alienated life-the greater is the store of your estranged being.

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

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.

When the labourer co-operates systematically with others, he strips off the fetters of his individuality, and develops the capabilities of his species.

History repeats itself, the first as tragedy, then as farce.

Society does not consist of individuals but expresses the sum of interrelations, the relations within which these individuals stand.