历史不仅仅是关于事实，更是关于它们之间的阴影。

The goal of mathematics is to understand the structures that underlie the phenomena we observe.

释义：如果人们能始终保持初相识时的那份真诚和友善，就能避免彼此之间的怨恨和纷争。

Success is not about the money, it's about the love.

积极强化的实施方式比强化的数量更重要。