无产阶级是普遍的阶级，他们的根本锁链是可以破裂的阶级。
The proletariat is the universal class, the class whose radical chains are capable of bursting asunder.
化学是逻辑的诗，也是诗的逻辑。
生命是一首用泪与笑写成的诗。
"The truth is rarely pure and never simple."
The greatest thing you'll ever learn is just to love and be loved in return.