Der Mensch kann tun was er will; er kann aber nicht wollen was er will.Man can do what he wills but he cannot will what he wills.

You can do what you will, but in any given moment of your life you can will only one definite thing and absolutely nothing other than that one thing.

Could the completed life course of such a man turn out in any respect, even the smallest, in any happening, any scene, differently from the way it did? – No! is the consistent and correct answer.

We should rather consider the events, as they happen, with the same eye as we consider the printed word which we read, knowing full well that it was there before we read it.