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。
"A story is not a letter to be read, but a door to be opened."
Marxian Socialism must always remain a portent to the historians of Opinion — how a doctrine so illogical and so dull can have exercised so powerful and enduring an influence over the minds of men， and， through them， the events of history.
The greatest untapped resource in the global economy is the full participation of women.
