“Darling,” she drawled, “won’t that be rather tiresome? If any misfortunes happen to my friends I always drop them at once! It sounds heartless, but … - Agatha Christie

To say a man does mad things because he is mad is merely unintelligent and stupid. A madman is as logical and reasoned in his action as a sane man — given his peculiar biased point of view. For example, if a man insists on going out and squatting about in nothing but a loin cloth his conduct seems eccentric in the extreme. But once you know that the man himself is firmly convinced that he is Mahatma Gandhi, then his conduct becomes perfectly reasonable and logical.

Words are such uncertain things, they so often sound well but mean the opposite of what one thinks they do.

Remember, he was a fanatic, and there is no fanatic like a religious fanatic.