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.

Nothing is more tedious than the dreaming platitude.

Philosophy is to science as masturbation is to sex.

So in Jewry we recognise a contemporary universal anti-social phenomenon, which has reached its present pitch through a process of, historical development in which the Jews have zealously co-operated. And this evil anti-social aspect of Jewry has grown to a stage at which: it must necessarily collapse.

In a word, the free trade system hastens the social revolution. It is in this revolutionary sense alone, gentlemen, that I vote in favor of free trade.

In my free time I do differential and integral calculus.

The meaning of peace is the absence of opposition to socialism.