在这个世界上，没有什么比孤独更能让人成长。

The roots of education are bitter, but the fruit is sweet.

"You can't knock on opportunity's door and not be ready."

实现不可能的唯一方法就是相信它是可能的。

No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.