The philosophers have only interpreted the world, in various ways: the point, however, is to change it.

The English Established Church... will more readily pardon an attack on 38 of its 39 articles than on 1/39 of its income.

As individuals express their life, so they are. What they are, therefore, coincides with their production, both with what they produce and with how they produce. The nature of individuals thus depends on the material conditions determining their production.

Workers of the world unite; you have nothing to lose but your chains.

Darwin has interested us in the history of nature's technology.

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.

All social life is essentially practical. All mysterious which lead theory to mysticism find their rational solution in human practice and in the comprehension of the practice.