Try not to become a man of success but rather try to become a man of value.

I'm not a whisper, I'm a shout.

在科学的探索中，我们不仅要问“为什么”，还要问“为什么不”。

The laws that forbid the carrying of arms are laws of such a nature. They disarm only those who are neither inclined nor determined to commit crimes.... Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man.