All science would be superfluous if the outward appearance and the essence of things directly coincided.

All social life is essentially practical. All mysterious which lead theory to mysticism find their rational solution in human practice and in the comprehension of the practice.

In proportion as the exploitation of one individual by another is put an end to, the exploitation of one nation by another will also be put an end to. In proportion as the antagonism between classes within the nation vanishes, the hostility of one nation to another will come to an end.

From the outset, the Christian was the theorizing Jew, the Jew is therefore the practical Christian, and the practical Christian has become a Jew again.

Colonial system, public debts, heavy taxes, protection, commercial wars, etc., these offshoots of the period of manufacture swell to gigantic proportions during the period of infancy of large-scale industry. The birth of the latter is celebrated by a vast, Hero-like slaughter of the innocents.

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

The social principles of Christianity preach cowardice, self-contempt, abasement, submission, humility, in a word all the qualities of the canaille