這是從一個我很喜歡的小姐姐的公眾號里看到的,一本書的節選，拿出來放在這里，算是隨時給自己的一個警醒吧,真的別覺得自己可以live forever，好好去感知周圍的世界
Fifteen years later, when she was a scholar, the experience led her to formulate a hypothesis : how we seek to spend our time may depend on how much time we perceive ourselves to have. ** When you are young and healthy, you believe you will live forever**. You do not worry about losing any of your capabilities. People tell you "the world is your oyster(你可以隨心所欲)，" " the sky is limited and so on. And you are willing to delay gratification- to invest years, for example, in gaining skills and resources for a brighter future. **You seek to plug into bigger streams of knowledge and information. You widen your networks of friends and connections, instead of hanging out with your mother. When horizons are measured in decades, which might as well be infinity to human beings, you most desire all that stuff at the top of Maslow's pyramid(馬斯洛金字塔)-achievement, creativity, and other attributes of "self-actualization." But as your horizons contract-（收縮) when you see the future ahead of you as finite and uncertain- your focus shifts to the here and now, to everyday pleasures and the people closest to you.
