Sustainability isn't an option; it's a responsibility.

"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."

成功不是关于成为最好的，而是关于让他人变得更好。

北极仅有一盏路灯，南极也只有一盏；唯独北极的点灯人和他南极的同行，过着闲逸懒散的生活：他们每年只工作两次。

过去总是紧张的，未来是完美的。