There are things that happen and leave no discernible trace, are not spoken or written of, though it would be very wrong to say that subsequent events go on indifferently, all the same, as though such things had never been.
"The best stories are those that refuse to end."
2004年9月13日，81岁的杨振宁在清华大学开始为本科生讲授普通物理。他说
你唯一应该努力超越的人就是昨天的自己。
The best way to predict your future is to create it.