There is no limit on better. Talent is distributed unfairly， but there is no limit on how much we can improve what we start with.
"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."
In science, we must be interested in things, not in persons.
秋天已经结束，白昼仍然漫长，王粲（字仲宣）怀念远方的心情更加凄凉