The creative union of the conscious with the unconscious is what one usually calls 'inspiration.'

The usages and methods of warfare are thus determined by changing circumstances and, therefore, they themselves can in nowise be eternal.

The Left Opposition declared that the new tempo of industrialization were above our forces, and that the liquidation of the kulaks as a class in the course of three years was a fantastic task, if one wishes to say so, we find ourselves this time "less radical" than the Stalinists.

Learning carries within itself certain dangers because out of necessity one has to learn from one's enemies.

Only in the Fall of 1924 did [Joseph] Stalin discover that it is especially Russia, as distinguished from other countries, which can by its own forces build up a socialist society.

In inner-party politics, these methods lead, as we shall yet see, to this: the party organization substitutes itself for the party, the central committee substitutes itself for the organization, and, finally, a dictator substitutes himself for the central committee.

Once again, he who ignores the problems of revolutionary strategy would do better not to talk about revolutions at all.