You can't get mad at anybody else for your own mistakes.

There is no limit on better. Talent is distributed unfairly， but there is no limit on how much we can improve what we start with.

The language of mathematics is universal; it transcends all cultural barriers.

实现明天的唯一限制将是我们今天的疑虑。

The changes in our life must come from the impossibility to live otherwise than according to the demands of our conscience.

低头不是认输,是要看清自己的路。仰头不是骄傲,是看见自己的天空。