The philosopher shudders mortally at marriage, together with all that could persuade him to it—marriage as a fatal hindrance on the way to the optimum. Up to the present what great philosophers have been married? Heracleitus, Plato, Descartes, Spinoza, Leibnitz, Kant, Schopenhauer—they were not married, and, further, one cannot imagine them as married. A married philosopher belongs to comedy, that is my rule; as for that exception of a Socrates—the malicious Socrates married himself, it seems, ironice, just to prove this very rule. Every philosopher would say, as Buddha said, when the birth of a son was announced to him: "Râhoula has been born to me, a fetter has been forged for me" (Râhoula means here "a little demon"); there must come an hour of reflection to every "free spirit" (granted that he has had previously an hour of thoughtlessness), just as one came once to the same Buddha: "Narrowly cramped," he reflected, "is life in the house; it is a place of uncleanness; freedom is found in leaving the house."
-Nietzsche, The Genealogy of Morals, Ch. 7