那些剥夺他人自由的人，他们自己不配享有自由；并且，在一个公正的上帝之下，也不能长久保留它。
Those who deny freedom to others, deserve it not for themselves; and, under a just God, can not long retain it.
To travel is to discover that everyone is wrong about other countries.
It is easier to fight for one's principles than to live up to them.
科学因怀疑和质疑而繁荣。