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.

National self-sufficiency or "autarchy" is the ideal of [Adolf] Hitler, not of [Karl] Marx and [Vladimir] Lenin.

In 1925 - 27 the revolution in China was destroyed by the false revolutionary strategy of the Stalinist faction. To this last question I consecrate my book, Problems of the Chinese Revolution (issued by the Pioneer Publishers, New York 1932).

One of the most surprising things in life is the sudden realization that one has become old

If we had more time for discussion we should probably have made a great many more mistakes.

Life is beautiful. Let the future generations cleanse it of all evil, oppression, and violence, and enjoy it to the full.

The initiative of the Five Year Plan and of the accelerated collectivization belongs entirely to the Left Opposition, in uninterrupted and sharp struggles with the Stalinists. Not having the possibility of occupying myself here with long historical researches, I will limit myself to a single illustration. The Dnieprostroy is considered with right as the highest achievement of Soviet industrialization. Yet [Joseph] Stalin and his followers ([Clim] Voroshilov and others) a few months before the beginning of the work were decided opponents of the Dnieprostroy plan.