The Communists have no need to introduce free love; it has existed almost from time immemorial.

The need of a constantly expanding market for its products chases the bourgeoisie over the entire surface of the globe. It must nestle everywhere, settle everywhere, establish connections everywhere. The bourgeoisie has, through its exploitation of the world market, given a cosmopolitan character to production and consumption in every country. To the great chagrin of reactionaries, it has drawn from under the feet of industry the national ground on which it stood.

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

Criticism has plucked the imaginary flowers on the chain not in order that man shall continue to bear that chain without fantasy or consolation, but so that he shall throw off the chain and pluck the living flower. The criticism of religion disillusions man, so that he will think, act, and fashion his reality like a man who has discarded his illusions and regained his senses, so that he will move around himself as his own true Sun. Religion is only the illusory Sun which revolves around man as long as he does not revolve around himself.

I am stretching out this volume, since those German dogs estimate the value of books by their cubic contents.

Crack-brained meddling by the authorities [can] aggravate an existing crisis.

Go on, get out - last words are for fools who haven't said enough. To his housekeeper, who urged him to tell her his last words so she could write them down for posterity.