我从不回头看，我只向前看。

As long as you have stayed in a swan's egg, it doesn't matter if you were born in a duck yard.

Every book is a journey, and every journey is a book.

沙漠之所以美丽，是因为在它的某个角落隐藏着一口井水……

知识的每一次进步都会带来新的问题和新的困难。