당신 자신을 향상시키면 모든 것을 향상시킬 수 있다.

“We must all suffer from one of two pains: the pain of discipline or the pain of…”

“If you just communicate, you can get by. But if you communicate skillfully, you…”

“Work on yourself more than you do on your job”

“Don't let your learning lead to knowledge. Let your learning lead to action.”