The joy of mathematics comes from the struggle to understand.
数学的快乐来自于为理解而奋斗。
I'm very proud to be black, but black is not all I am. That's my cultural historical background, my genetic makeup, but it's not all of who I am nor is it the basis from which I answer every question.
真理是一种发生在观念上的东西。
失败不可怕,可怕的是不敢尝试。