The Soviet Union needs thinking and critical friends, such as are capable not only of singing hymns in the hours of success, but of not shrinking in the hour of defeat and danger.

The bourgeoisie, which far surpasses the proletariat in the completeness and irreconcilibility of its class consciousness, is vitally interested in imposing its moral philosophy upon the exploited masses. It is exactly for this purpose that the concrete norms of the bourgeois catechism are concealed under moral abstractions...The appeal to abstract norms is not a disinterested philosophic mistake but a necessary element in the mechanics of class deception.

Communism needs democracy like the human body needs oxygen.

No one revolution up to now has brought all that was expected of it by the masses. Hence the inevitability of a certain disillusionment, of a lowering of the activity of the vanguard, and consequently, of the growing importance of the rearguard. [Joseph] Stalin's faction has raised itself on the wave of reaction against the October revolution.

The clearer and deeper the public opinion of the world, in the first instance the opinion of the working masses, will understand the contradictions and the difficulties of the socialist development of an isolated country, the higher will it appreciate the results achieved. The less it identifies the fundamental methods of Socialism with the zigzags and errors of the Soviet bureaucracy, the less will be the danger that, by the inevitable revelation of these errors and of their consequences, the authority, not only of the present ruling group, but of the workers' State itself, may decline.

I emphasized the significance of revolutionary strategy.

Insurrection is an art, and like all arts has its own laws.