Natural science will in time incorporate into itself the science of man, just as the science of man will incorporate into itself natural science: there will be one science.

Labour is ... not the only source of material wealth, i.e, of the use-values it produces. As William Petty says, Labour is the father of material wealth, the earth is its mother.

Reason has always existed, but not always in a reasonable form.

All I know is I'm not a Marxist.

Landlords, like all other men, love to reap where they never sowed.

The animal is one with its life activity. It does not distinguish the activity from itself. It is its activity. But man makes hislife activity itself an object of his will and consciousness. He has a conscious life activity. It is not a determination with which he is completely identified.

In bourgeois society capital is independent and has individuality, while the living person is dependent and has no individuality.