Cannot you tell that? Every fool can tell that. It was the very day that young Hamlet was born, he that is mad and sent into England." "Ay, marry, why was he sent into England?" "Why, because he was mad. He shall recover his wits there, or, if he do not, it's no great matter there." "Why?" "'Twill not be seen in him there. There the men are as mad as he.
Saying that a great genius is mad, while at the same time recognizing his artistic worth, is like saying that he had rheumatism or suffered from diabetes. Madness, in fact, is a medical term that can claim no more notice from the objective critic than he grants the charge of heresy raised by the theologian, or the charge of immorality raised by the police.
People have fallen into a foolish habit of speaking of orthodoxy as something heavy, humdrum, and safe. There never was anything so perilous or so exciting as orthodoxy. It was sanity: and to be sane is more dramatic than to be mad.