I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.
释义:勇敢的人敢闯天下,什么事情都能做成;过于谨慎的人却处处束手束脚,一步也难以前行。
智慧之鸟的猫头鹰,在文明的暮色中才开始起飞。