解决问题的最简单方法是否认它的存在。
I’ve learned that pain can be the greatest inspiration.
Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.
不要当房间里最聪明的那个人，与比自己更聪明的人交往，并向他们学习。更好的是找到那些与你意见不同的聪明人。
A teacher must have a healthy body, the skills of a farmer, the mind of a scientist, the interest in art, and the spirit of social reform.
所有科学的统一性仅在于其方法，而不在于其材料。