September 8

It is folly, not revolutionism, to deprive ourselves in advance of any freedom of action, openly to inform an enemy who is at present better armed than we are whether we shall fight him, and when. To accept battle at a time when it is obviously advantageous to the enemy, but not to us, is criminal; political leaders of the revolutionary class are absolutely useless if they are incapable of "changing tack, or offering conciliation and compromise" in order to take evasive action in a patently disadvantageous battle.

V.I. Lenin
from Left-Wing Communism: an Infantile Disorder (1920)