From Vanity Fair:
Reviewing familiar principles and maxims in the face of mortal illness, Christopher Hitchens has found one of them increasingly ridiculous: “Whatever doesn’t kill me makes me stronger.” Oh, really? Take the case of the philosopher to whom that line is usually attributed, Friedrich Nietzsche, who lost his mind to what was probably syphilis. Or America’s homegrown philosopher Sidney Hook, who survived a stroke and wished he hadn’t. Or, indeed, the author, viciously weakened by the very medicine that is keeping him alive.