Maintaining curiosity is the source of innovation.
保持好奇心是创新的源泉。
——〈宣布和平统一英文宣言〉,1922年8月17日
I was so much older then, I'm younger than that now.
Every action has its pleasures and its price.
数学的美在于它能够用一种既精确又普遍的语言来描述宇宙。