To achieve great things, two things are needed: a plan, and not quite enough time.

…great men have an instinct for what the future will demand…It has always been the case that individuals must sacrifice to further the advance of civilization and their particular society. But there is another definition of a great man. Primarily that he does not accept that burden. In some way, criminal, immoral, or by sheer cunning, he will ride the crest of that wave of human progress without sacrifice.