Not believing in force is the same as not believing in gravity.

...capitalism does live by crises and booms, just as a human being lives by inhaling and exhaling.

The revenge of history is more powerful than the revenge of the most powerful General Secretary.

Only the defeat of the proletariat in Germany in 1923 gave the decisive push to the creation of Stalin's theory of national socialism: the downward curve of the revolution gave rise to Stalinism, not to the theory of the permanent revolution, which was first formulated by me in 1905. This theory is not bound to a definite calendar of revolutionary events; it only reveals the world-wide interdependence of the revolutionary process.

Simultaneously the Left Opposition in the course of several years carried on a struggle against the Stalinists in favor of collectivization.

Everything is relative in this world, where change alone endures.

In France, the leader of Jacobinism perished on the guillotine; with us, the change of leadership was achieved by means of arrest and banishment. The technique of the process is gentler, but its essence is the same.