Unity must be won, and only the workers, the class-conscious workers themselves can win it - by stubborn and persistent effort.

The whole struggle of our Party (and of the working class movement in Europe generally) must be directed against opportunism. The latter is not a current of opinion, not a tendency; it (opportunism) has now become the organised tool of the bourgeoisie within the working class movement.

Attention, must be devoted principally to raising the workers to the level of revolutionaries; it is not our task to descend to the level of the 'working masses'.

One cannot live in society and be free from society.

Honesty in politics is the result of strength; hypocrisy is the result of weakness.

Freedom in capitalist society always remains about the same as it was in ancient Greek republics: Freedom for slave owners.

For the complete extinction of the state, complete Communism is necessary.