If we had more time for discussion we should probably have made a great many more mistakes.

The theory of the permanent revolution, in contradiction to the theory of socialism in one country, was recognized by the entire Bolshevik party during the period from 1917 to 1923.

Man will become immeasurably stronger, wiser, and subtler; his body will become more harmonious, his movements more rhythmic, his voice more musical. The forms of life will become dynamically dramatic. The average human type will rise to the heights of an Aristotle, a Goethe, or a Marx. And above these heights, new peaks will rise.

Against my protests a mausoleum was built on the Red Square, a monument unbecoming and offensive to the revolutionary consciousness.

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

There is no justice in bureaucracy for the individual, for bureaucracy caters only to itself. One cannot practice the same bureaucracy as one is fighting against.

Our differences with [Joseph] Stalin are entirely of a strategical character.