In the appendix to my History of the Russian Revolution I give a detailed and documented study of the ideas of the Bolshevik party on the October revolution. This study, I hope, will make it impossible in the future to ascribe to [Vladimir] Lenin the theory of Socialism in a single country.

[Joseph] Stalin closes the exposition of these [Leon Trotsky] ideas with the words, "Such are in general the characteristic features of [Vladimir] Lenin's conception of the proletarian revolution."

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

A means can be justified only by its end. But the end in its turn needs to be justified.

Nowhere else did repressions, purges, suppressions, and all other kinds of bureaucratic hooliganism in general acquire such horrifying scope as in Ukraine, in the struggle against powerful forces concealed in the Ukrainian masses that desired more freedom and independence.

The usages and methods of warfare are thus determined by changing circumstances and, therefore, they themselves can in nowise be eternal.

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