最伟大的故事是那些挑战我们信念的故事。

The dead don’t stay buried if they have unfinished business.

伟大的真理，其反面同样是伟大的真理。

书籍是释放我们潜力的钥匙。

当你停止学习的那一刻，你就停止了成长。

The teacher must believe in the potential of his students. He must see in each one of them a spark of the divine fire.

每个数学问题都有解答；挑战在于找到它。