The beauty of mathematics is that it is both an art and a science.
历史学家的任务是复活那些被时间湮没的声音。
I can never be safe; I always try and go against the grain. As soon as I accomplish one thing, I just set a higher goal. That's how I've gotten to where I am.
It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is most adaptable to change.