Workers – men and women – of all countries, place yourselves under the banner of the Fourth International. It is the banner of your approaching victory!

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

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

‎The party that leans upon the workers but serves the bourgeoisie, in the period of the greatest sharpening of the class struggle, cannot but sense the smells wafted from the waiting grave.

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

Where the sole employer is the state, [opposition] means death by slow starvation.

Root out the counterrevolutionaries without mercy, lock up suspicious characters in concentration camps... Shirkers will be shot, regardless of past service.