一本儿童书是他们参观的第一个艺术画廊。

破坏容易建设难。

The real moral test of a society is how it treats those who are at the dawn of life, the children; those who are in the twilight of life, the aged; and those who are in the shadow of life, the sick, the needy and the handicapped.

好的算法就像一把锋利的刀——它以最小的努力准确地完成它应该做的事情。