Scientific greatness is less a matter of intelligence than character; if the scientist refuses to compromise or accept incomplete answers and persists in grappling the most basic and difficult questions.
At most, the greatest persons are but great wens, and excrescences; men of wit and delightful conversation, but as morals for ornament, except they be so incorporated into the body of the world that they contribute something to the sustentation of the whole.
There was never a man born so wise or good, but one or more companions came into the world with him, who delight in his faculty, and report it. I cannot see without awe, that no man thinks alone and no man acts alone, but the divine assessors who came up with him into life,--now under one disguise, now under another,--like a police in citizen's clothes, walk with him, step for step, through all kingdoms of time.
What I must do is all that concerns me, not what the people think. This rule, equally arduous in actual and in intellectual life, may serve for the whole distinction between greatness and meanness.
Greatness of spirit is to bear finely both good fourtune and bad, honor and disgrace, and not to think highly of luxury or attention or power or victories in contests, and to possess a certain depth and magnitude of spirit.
Education has a tremendous power on man. Can't we see to which astonishing disciple the people of Sparte have submitted ("s'est plié", Fr.) for centuries, and this with a view to very petty purposes: purely outer greatness, the military predominace of Sparte. This example proves that man can everything on themselves when they want it ("peuvent tout sur eux-mêmes quand ils le veulent", Fr.); therefore it would only be a question of making them will the good.
The voyage of the best ship is a zigzag line of a hundred tacks. See the line from a sufficient distance, and it straightens itself to the average tendency. Your genuine action will explain itself, and will explain your other genuine actions. Your conformity explains nothing. Act singly, and what you have already done singly will justify you now. Greatness appeals to the future.
Plan for what is difficult while it is easy, do what is great while it is small. The difficult things in this world must be done while they are easy, the greatest things in the world must be done while they are still small. For this reason sages never do what is great, and this is why they achieve greatness.