The economic prerequisites for the socialist revolution are fully matured in the US. The political premises are likewise far more advanced than might… - James Patrick Cannon

This knowledge will not fall from heaven; it will be acquired only by those who have the mind and the will to study, as Marx required of his first disciples. Wilhelm Liebknecht’s little volume of reminiscences will be an aid and stimulus in this direction. It ought to have a place on the bookshelf of every revolutionary worker.

Without revolutionary theory, the workers, even with the best will in the world, cannot fight the capitalist system successfully. This statement holds good, not merely in the question of the final revolutionary struggle for power, it applies equally in every aspect of the daily struggle. Workers who have no understanding of the theory of revolution cannot follow a consistent line of action that leads toward it. Behind every action aimed at the bourgeoisie, there must be the theory of the revolutionary overthrow of the bourgeoisie. False policies in the ranks of the workers, whereby even their own good will and energy is transformed into a force operating against their own interests, spring in the first place from false theory. Only by an understanding of the revolutionary nature of their struggle, and of the necessity of shaping their actions in the light of this theory and adapting them to the execution of it, can the workers follow a systematic policy of opposition to the bourgeoisie and of defense of their own interests. Revolutionary theory is not something separate from action, but is the guiding principle of all revolutionary action.

Recoiling against the cult of Stalin, which caused such devastation in the American radical movement, some people now describe all reference to the Marxist authorities as the cult of Marx, the cult of Lenin, or the cult of Trotsky. Those who used to forbid themselves to say anything until it was first said by Stalin, or even to think any thoughts which had not first been thought for them by Stalin, have suddenly decided that the cure for this mental, moral and political prostration is to listen to nothing that is said and to read nothing that has been written outside the borders of the fifty states.