数学的进步是通过它能解决的问题数量来衡量的。
I therefore have decided to read only the writings of men who have been executed or have risked their lives in some way.
I'm a perfectionist. I'm pretty much insatiable. I feel there's so many things I can improve on.
"Fairy tales are more than true: not because they tell us that dragons exist, but because they tell us that dragons can be beaten."