"Every story is a journey, and every journey changes us."

The true discovery of America is before us. The true fulfillment of our spirit, of our people, of our mighty and immortal land, is yet to come.

Pain is the absence of pleasure, pleasure is the absence of pain.

每个回声都包含着它所处空间的历史。

动力学的方程在用变分法的语言表达时是完全的。

最坚强的人是那些经历最多的人。