Married philosopher  

"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 [to Xanthippe], it seems, ironice, just to prove this very rule." --The Genealogy of Morals by Friedrich Nietzsche