Every challenge is an opportunity to learn something new about yourself.

如果你不知道，意见有什么用呢？

我喜欢狗。你总是知道狗在想什么。它有四种情绪：开心、难过、生气和专注。

We shall never prevent the abuse of power if we are not prepared to limit power in a way which occasionally may prevent its use for desirable purposes.