Without revolutionary theory there can be no revolutionary movement.

Capitalism has triumphed all over the world, but this triumph is only the prelude to the triumph of labour over capital.

Atheism is a natural and inseparable part of Marxism, of the theory and practice of scientific socialism. Our program necessarily includes the propaganda of atheism.

Learning is never done without errors and defeat.

Sometimes - history needs a push.

All extremes are bad. All that is good and useful, if carried to extremes, may become-and beyond a certain limit is bound to become-bad and injurious.

Human knowledge is not (or does not follow) a straight line, but a curve, which endlessly approximates a series of circles, a spiral. Any fragment, segment, section of this curve can be transformed (transformed one-sidedly) into an independent, complete, straight line, which then (if one does not see the wood for the trees) leads into the quagmire, into clerical obscurantism (where it is anchored by the class interests of the ruling classes).