Don't be afraid to admit defeat. Learn from defeat. Do over again more thoroughly, more carefully, and more systematically what you have done badly.

The goal of socialism is communism.

Our aim is to achieve a socialist system of society, which, by eliminating the division of mankind into classes, by eliminating all exploitation of man by man and nation by nation, will inevitably eliminate the very possibility of war.

If it were necessary to give the briefest possible definition of imperialism, we should have to say that imperialism is the monopoly stage of capitalism.

Give me four years to teach the children and the seed I have sown will never be uprooted.

But democracy is by no means a limit one may not overstep; it is only one of the stages in the course of development from feudalism to capitalism, and from capitalism to Communism.

The most important thing in illness is never to lose heart.