Efficiency and ethics must go hand in hand. Cutting corners today will cost us dearly tomorrow.

小说是最能表达人类复杂性的体裁。

As in geometry the most natural way of beginning is from a mathematical point, so is the same method in observations and natural history the most genuine, simple, and instructive.

真正的领导力在于倾听、学习，然后引领。

数学是人类精神最美丽、最强大的创造。