善良是一种聋子能听见、盲人能看见的语言。
Kindness is the language which the deaf can hear and the blind can see.
Data structures are the backbone of efficient algorithms.
The true essence of a story is not in its plot, but in the emotions it evokes.
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