Rebuilding my career at fifty wasn’t easy—but nothing worthwhile ever is.
50岁重建事业并不容易——但值得的事情从来都不简单。
数学之美在于它能够精确而优雅地描述自然界的基本法则。
"To live is to suffer, to survive is to find some meaning in the suffering."
效率是把事情做对；效果是做对的事情。