The best way to learn mathematics is to do mathematics.

每一条边界都是虚构的，先在脑海中划定，然后才在大地上留下伤痕。

Simple things often evoke the strongest emotions.

I’ve had my best years after fifty. Age is just a number—it’s your attitude that counts. 

The ladder of success is best climbed by stepping on the rungs of opportunity.

By the help of microscopes, there is nothing so small as to escape our inquiry; hence there is a new visible world discovered to the understanding.

梦想是照亮前路的灯塔。

The bond market is the ultimate measure of confidence.