“Revolution can never be forecast; it cannot be foretold; it comes of itself. Revolution is brewing and is bound to flare up.”

“You cannot buy the revolution. You cannot make the revolution. You can only be the revolution. It is in your spirit, or it is nowhere.”

“Revolutionaries do not make revolutions! The revolutionaries are those who know when power is lying in the street and when they can pick it up. Armed uprising by itself has never yet led to revolution.”

“You cannot take what you have not given, and you must give yourself. You cannot buy the Revolution. You cannot make the Revolution. You can only be the Revolution. It is in your spirit, or it is nowhere.”

“The responsibility of our time is nothing less than a revolution. A revolution that would be peaceful if we are wise enough; humane if we care enough; successful if we are fortunate enough. But a revolution will come whether we will it or not. We can affect it's character, we cannot alter it's inevitability.”

“Both for the production on a mass scale of this communist consciousness, and for the success of the cause itself, the alteration of men on a mass scale is necessary, an alteration which can only take place in a practical movement, a revolution; this revolution is necessary, therefore, not only because the ruling class cannot be overthrown in any other way, but also because the class overthrowing it can only in a revolution succeed in ridding itself of all the muck of ages and become fitted to found society anew.”