O homem superior é aquele que cumpre o seu dever, sem se preocupar com o resultado.
高尚的人是履行自己职责而不关心结果的人。
To do mathematics is to engage in an act of creation and discovery simultaneously.
Good science requires patience and persistence.
"You can't go back and change the beginning, but you can start where you are and change the ending."
你无法回到过去改变开头，但可以从现在开始改变结局。