I am always glad to think that my education was, for the most part, informal, and had its roots in the soil.
我总是很高兴地想到，我的教育大部分是非正式的，并且根植于土壤之中。
人的本性是不断生长的生理，每天都在生成变化。
I am not an Athenian or a Greek，but a citizen of the world.
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.
权力不是别人给你的。你必须自己去争取。
You are never too old to set another goal or to dream a new dream.