There is no greater sorrow than to recall happiness in times of misery.

学得越多，知道得越多；知道得越多，忘记得越多；忘记得越多，知道得越少。那么，为什么要学习呢？

狼群的力量在于狼，狼的力量在于狼群。

人不能在他的历史中表现出他自己，他在历史中奋斗着露出头角。

Chemistry is the art of building bridges between the microscopic and the macroscopic.

"The past is what you remember, imagine you remember, convince yourself you remember, or pretend you remember."

One should not believe or disbelieve， but rather remain in suspense.