“But it was possible to teach what one could not practice.”

“One man practicing sportsmanship is far better than a hundred teaching it.”

“Parents can tell but never teach, unless they practice what they preach.”

“The foundation of the Buddha's teachings lies in compassion, and the reason for practicing the teachings is to wipe out the persistence of ego, the number-one enemy of compassion.”

“...No one teaches well unless he has first learned well; no one learns well unless he learns in order to teach. And both learning and teaching are vain and unprofitable unless accompanied by practice.”

“Literature could turn you into an asshole: he’d learned that teaching grad-school seminars. It could teach you to treat real people the way you did characters, as instruments of your own intellectual pleasure, cadavers on which to practice your critical faculties.”