The joy of chemistry is in the doing, not just the discovering.
代数分析很快让我们忘记了研究的主要对象,因为它将我们的注意力集中在抽象的组合上,直到最后我们才回到最初的目标。
中国的崛起将不可避免地导致与美国的冲突,因为它挑战了现有的权力平衡。
I don't sing because I'm happy; I'm happy because I sing.
20多岁时,人格的变化比人生中任何其他时期都要大。
Every man has a right to his opinion, but no man has a right to be wrong in his facts.