成长是痛苦的,但也是必要的。
Growth is painful but necessary.
"In tennis, like in life, you have to keep moving forward—one point at a time."
模型是对现实的简化表示,但其价值在于它能够提供不立即显而易见的见解。
可持续性不是一种选择,而是我们对后代的责任。
I'm not afraid of dying, I'm afraid of not trying.
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.