Vote for the man who promises least; he'll be the least disappointing.

The most successful leaders are those who listen—to their teams, their customers, and the environment.

睡在哪里不都是睡在夜里。

数学的快乐来自于复杂事物变得简单的清晰时刻。

儿童书籍应该既是一面镜子，也是一扇窗户。