I am the happiest creature in the world. Perhaps other people have said so before, but not one with such justice. I am happier even than Jane; she only smiles, I laugh.

化学的语言是普遍的，它的符号被所有国家理解。

The measure of a civilization is how it treats its writers.

自然知识的改进者绝对拒绝承认所谓的权威。