我逐渐相信，伟大的教师就是伟大的艺术家，而且这样的艺术家和其他任何伟大的艺术家一样稀少。教学甚至可能是最伟大的艺术，因为它的媒介是人的思想和灵魂。
I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.
我们为爱所做的事情往往是最不理性的。
The safest way to double your money is to fold it over once and put it in your pocket.
The best policies are those that listen to both science and tradition.
解释：要量力而行，实力达得到就进攻，达不到就撤退。