Give the pupils something to do, not something to learn; and the doing is of such a nature as to demand thinking; learning naturally results.

The challenge in model checking is not just to find errors, but to understand why they occur.

过去是幽灵，未来是梦，我们拥有的只有现在。

"To live is the rarest thing in the world. Most people exist, that is all."

The writer is someone who plays with the body of his mother.

我一直知道我想成为一名歌手，我从不允许任何人告诉我我不能。