目妄视则淫，耳妄听则惑，口妄言则乱。
释义：眼睛随便乱看就会使你惑乱，耳朵随意乱听就会使你迷惑，嘴巴随意胡说就会给你带来乱子。警示人们在日常生活中要保持谨言慎行的态度，以免招来祸患。
In science, the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.
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.