坚持做自己喜欢的事情，即使遇到困难也不要轻易放弃。

The true measure of success is how much you contribute to the progress of society.

I don't know what I would do if I didn't act. I think I would go mad.

一个好的侦探知道，每个答案都会引出另一个问题。

书籍是我们能送给孩子的最珍贵的礼物。