The sole difference between myself and a madman is the fact that I am not mad!

There is only one difference between a madman and me. The madman thinks he is sane. I know I am mad.

One must be sane to think clearly, but one can think deeply and be quite insane.

Now this is the point. You fancy me a mad. Madmen know nothing. But you should have seen me. You should have seen how wisely I proceeded...

I mean, maybe I am crazy. I mean, maybe. But if this is all there is, then I don't want to be sane.

Sane people did what their neighbors did, so that if any lunatics were at large, one might know and avoid them.