真正的旅程不在于发现新的风景，而在于拥有新的眼光。

The strongest is never strong enough to be always the master unless he transforms strength into right and obedience into duty.

人们为了保护自己不受伤害，会伤害他人。

The most powerful tool for change is knowledge, rigorously pursued and widely shared.

Writing is a way of speaking without being interrupted.

All men have the stars, but they are not the same things for different people. For some, who are travelers, the stars are guides. For others they are no more than little lights in the sky. For others, who are scholars, they are problems. For my businessman they were wealth.

Every mathematical problem has a solution; it just takes time and creativity to find it.