I know well enough, from my own experience, the historical ebb and flow. They are governed by their own laws. Mere impatience will not expedite their change. I have grown accustomed to viewing the historical perspective not from the stand point of my personal fate. To understand the causal sequence of events and to find somewhere in the sequence one's own place – that is the first duty of a revolutionary. And at the same time, it is the greatest personal satisfaction possible for a man who does not limit his tasks to the present day.

Foreword - My Life (1930)