促进民主的最有效方式不是通过军事干预，而是通过建立制度和促进经济发展的缓慢而稳定的过程。
The only real prison is fear, and the only real freedom is freedom from fear.
数学是人类精神最美丽、最强大的创造。
The only limit to our realization of tomorrow is our doubts of today.
The book is a mirror: if an ape looks into it, an apostle is unlikely to look out.
The best way to help people is not to do things for them, but to help them do things for themselves.
帮助他人的最好方式不是为他们做事，而是帮助他们为自己做事。