在年老之后，你会发现自己的双手能解决很多难题。一只手用来帮助自己，另一只用来帮助别人。
As you grow older, you will discover that you have two hands, one for helping yourself, the other for helping others.
心是脆弱的东西，容易破碎，但也有着难以置信的韧性。
Personality changes more during your 20s than at any other time in life.
在科学中，我们必须接受我们最珍视的理论可能是错误的这种可能性。
The time of life is limited and unchangeable, so it is necessary to use every minute efficiently. Not using it well is a waste.
