The heart is a fragile thing, easily broken but hard to mend.
The most interesting art is the art that makes you think.
量子场论的发展表明，真空不是空的，而是充满了虚粒子。
The best way to predict the future is to invent it.
The whole honours and pride in the world, all come from the mother.
复杂性不是理解的障碍，而是需要克服的挑战。