At the close of our studies， we knew all the past of physics， but nothing of the present and the future.
在学习结束时，我们知道物理学的所有过去，但对现在和未来一无所知。
Never stop learning—the moment you do, you fall behind.
你享受浪费的时间并不算白白浪费。
The more we learn about the true nature of animals, the more we realize how much we have in common with them.
