The beauty of mathematics is that it allows us to abstract away from the physical world and focus on the underlying principles.
Friendship is love without his wings.
I'm not afraid of dying, I'm afraid of not trying.
The human spirit is stronger than anything that can happen to it.
所以,音乐越繁复,治国的成绩越少。因此来看,音乐不是用来治理天下的啊!
Make no mistake about it: Computers process numbers - not symbols. We measure our understanding (and control) by the extent to which we can arithmetize an activity.