兼相爱,交相利
爱人者,人恒爱之。你爱敬别人,别人就会爱敬你。你利益别人,别人也会给你带来利益。
What we have to remember is that we can still do anything. We can change our minds. We can start over.
我不让恐惧控制我,我让它挑战我。
The most exciting moments in mathematics are when you discover that two seemingly unrelated areas are deeply connected.