Changes in society are due chiefly to the development of the internal contradictions in society, that is, the contradiction between the productive forces and the relations of production, the contradiction between classes and the contradiction between the old and the new; it is the development of these contradictions that pushes society forward and gives the impetus for the suppression of the old society by the new.

War is the highest form of struggle for resolving contradictions, when they have developed to a certain stage, between classes, nations, states, or political groups, and it has existed ever since the emergence of private property and of classes.

Every difference in human concepts should be seen as a reflection of objective contradictions. These objective contradictions are reflected in subjective thought, forming the contradictory movement of concepts, driving the development of thought, and continuously resolving people's ideological problems.

Man must be sustained in suffering by a hope so high that no conflict with actuality can dash it-so high, indeed, that no fulfilment can satisfy it: a hope reaching out beyond this world.

I welcome all signs that a more virile, warlike age is about to begin, which will restore honor to courage above all! For this age shall prepare the way for one yet higher, and it shall gather the strength that this higher age will require some day.

My brother, are war and battle evil? Necessary, however, is the evil; necessary are the envy and the distrust and the back-biting among the virtues.