The only antidote to mental suffering is physical pain.

It would perhaps be as well if things were to remain quiet for a few years yet, so that all this 1848 democracy has time to rot away.

Our epoch, the epoch of the bourgeoisie, posses however, this distinctive feature; it has simplified the class antagonisms. Society as a whole is more and more splitting up into two great hostile camps, into two great classes directly facing each other.

Modern society, which, soon after its birth, pulled Plutus by the hair of his head from the bowels of the earth, greets gold as its Holy Grail, as the glittering incarnation of the very principle of its own life.

The burgeoisie, by the rapid improvement of all instruments of production, by the immensely facilitated means of communication, draws all nations into civilization.

In my free time I do differential and integral calculus.

The working class is revolutionary or it is nothing.