道德的营养不良和精神的中毒对人的心灵的危害，正如身体的营养不良对于身体健康的危害一样。
A library is a cemetery of living books, each one waiting to be resurrected by a reader.
经济学方法为理解所有人类行为提供了一个有价值的统一框架。
最好的想法往往来自最意想不到的地方；保持开放的心态。
The mother-child relationship is paradoxical and, in a sense, tragic. It requires the most intense love on the mother's side, yet this very love must help the child grow away from the mother, and to become fully independent.
悲观导致软弱，乐观带来力量。