经济学最终是为了改善人类福祉。

Success is not about fame and money. It's about happiness and fulfillment.

"The key is not to get too high when things are going well and not too low when things are going bad."

美貌、青春、财富、甚至爱情本身，都不能让深得上帝恩宠的人免于焦虑和痛苦，远离哀愁，也无法让他们避免失去自己最爱的东西。因为，一生中，有些雨必然得下，一些日子必然会黑暗、哀伤、凄凉。

要理解心灵，就要研究它在现实生活中的运作。