真相很少是纯粹的,也从来不是简单的。
Change is hardest in the beginning, messiest in the middle, and best at the end.
人们说苦难喜欢陪伴,但我认为自由也是如此。
Innovation is not just about technology, but about creating value for customers.
数学的快乐来自创造的行为,而不仅仅是结果。