如果时空穿梭是可能的，那从未来穿越回来的旅客在哪里呢？

做数学的过程比结果更重要。

In business, as in life, you have to trust your instincts and take calculated risks.

The quality of an organization's communication determines the quality of its relationships.

利润不应以牺牲地球为代价。

能者做事，不能者教书。