I have learned that only two things are necessary to keep one's wife happy. First, let her think she's having her own way. And second, let her have it.
“Schools are not intended to moralize a wicked world, but to impart knowledge and develop intelligence, with only two social aims in mind: prepare to take on one's share in the world's work, and perhaps in addition, lend a hand in improving society, after schooling is done.”