正义并不总是黑白分明;有时它是灰色的。
The truth is always elsewhere.
Perception is not determined simply by stimulus patterns; rather it is a dynamic searching for the best interpretation of the available data.
"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."