Everything is relative in this world, where change alone endures.

The end may justify the means as long as there is something that justifies the end.

The Federated Republic of Europe-the United States of Europe-that is what must be. National autonomy no longer suffices. Economic evolution demands the abolition of national frontiers. If Europe is to remain split into national groups, then Imperialism will recommence its work. Only a Federated Republic of Europe can give peace to the world.

The motive force of history is truth and not lies.

In a serious struggle there is no worse cruelty than to be magnanimous at an inopportune time.

With all due respect to all philistines, the dictatorship of the proletariat does just consist in "giving a hiding" to the classes that were previously supreme, before forcing them to recognize the new order and to submit to it.

The creative union of the conscious with the unconscious is what one usually calls 'inspiration.'