“There is nothing quite so terrifying as a mad sheep.”

“There’s nothing quite so pernicious as wishful thinking.”

“You have to quit confusing a madness with a mission.”

“Dogs, like very small children, are quite mad.”

“The only animal from which humans have nothing to learn, in fact, is the sheep. Humans have already learned everything the sheep's got to teach.”

“The solitude of writing is also quite frightening. It's quite close to madness, one just disappears for a day and loses touch.”

“Drunkenness is nothing but voluntary madness.”
Nihil aliud esse ebrietatem quam voluntariam insaniam.

“There is nothing more terrifying than the absoluteness of one who believes he's right.”

“There is nothing quite so useless, as doing with great efficiency, something that should not be done at all.”

“All great art has madness, and quite a lot of bad art has it, too.”