Chemistry is the silent architect of our everyday lives.
The peculiar evil of silencing the expression of an opinion is that it is robbing the human race； posterity as well as the existing generation； those who dissent from the opinion， still more than those who hold it.
历史上的重大战争——我们被告知，而且被告知的是真实的——是国家不平等增长的直接或间接结果。
在数学中，没有捷径可走。
永远不要停止提问，因为答案就从那里开始。
You are the only real obstacle in your path to a fulfilling life.