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.

What shall we call an "immediate possibility"? In 1923 the situation in Germany was profoundly revolutionary, but what was lacking for a victorious revolution was a correct strategy.

The revolution has its own laws: in the period of its culmination it pushes the most highly developed, determined and far-seeing stratum of the revolutionary class to the most advanced positions.

You may not be interested in strategy, but strategy is interested in you.

The historic ascent of humanity, taken as a whole, may be summarized as a succession of victories of consciousness over blind forces - in nature, in society, in man himself.

Fascism is nothing but capitalist reaction...

The fundamental flaw of vulgar thought lies in the fact that it wishes to content itself with motionless imprints of a reality which consists of eternal motion.