You are worth more than you think.

如果不符合现实，最优雅的理论也是无用的。

Representation theory provides the language in which many number-theoretic phenomena can be expressed.

I believe that man will not merely endure: he will prevail. He is immortal, not because he alone among creatures has an inexhaustible voice, but because he has a soul, a spirit capable of compassion and sacrifice and endurance.

The best leaders are those who listen more than they speak.