In place of the old bourgeois society, with its classes and class antagonisms, we shall have an association in which the free development of each is the condition for the free development of all.

Surplus-value and the rate of surplus-value are... the invisible essence to be investigated, whereas the rate of profit and hence the form of surplus-value as profit are visible surface phenomena

The imaginary flowers of religion adorn man's chains. Man must throw off the flowers, and also the chains.

The writer must earn money in order to be able to live and to write, but he must by no means live and write for the purpose of making money.

When commercial capital occupies a position of unquestioned ascendancy, it everywhere constitutes a system of plunder.

Nature is man's inorganic body -- that is to say, nature insofar as it is not the human body. Man lives from nature -- i.e., nature is his body -- and he must maintain a continuing dialogue with it is he is not to die. To say that man's physical and mental life is linked to nature simply means that nature is linked to itself, for man is a part of nature.

They don't know it, but they are doing it.