要理解他人，必须先理解自己。
To understand others, you must first understand yourself.
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.
不作为的代价远大于行动的代价。
科学家不满足于停留在表面现象。