你不能只做一次有效的事情，你周围的一切都在不断变化。要成功，就要走在变化的前面。
You can't just keep doing what works one time, everything around you is always changing. To succeed, stay out in front of change.
The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter.
教学的艺术不在于传授本领，而在于激励、唤醒和鼓舞。
世界上最好和最美丽的东西是看不见甚至摸不着的——它们必须用心去感受。