Without doubt, machinery has greatly increased the number of well-to-do idlers.

The history of all previous societies has been the history of class struggles.

But, you will say, we destroy the most hallowed of relations, when we replace home education by social.... The Communists have not invented the intervention of society in education; they do but seek to alter the character of that intervention, and to rescue education from the influence of the ruling class.

Music is the mirror of reality.

Every emancipation is a restoration of the human world and of human relationships to a man himself.

The ruling ideas of each age have ever been the ideas of its ruling class.

It is not the consciousness of men that determines their being, but, on the contrary, their social being that determines their consciousness.