定价的艺术不在于设定价格，而在于设计揭示真实价值的过程。

这句话其实是莎士比亚借哈姆雷特之口说的，但是霍金非常喜欢，曾在自己著作中多次引用，所以很多人误以为本句话是霍金说的。

Small, deliberate actions practiced consistently can lead to big changes in happiness levels.

儿童擅长在自由活动中建立规律。

The deep, personal material of the latter half of your life is your children. You can write about your parents when they're gone, but your children are still going to be here, and you're going to want them to come and visit you in the nursing home.