The story of chemistry is the story of humanity’s quest to understand the world.

创新发生在你敢于不同思考的时候。

解释：在人活动范围内的水就污浊，在野外无人地方的水就清洁。同为一样的水，都是从天边开源，有的混浊有的清洁，这是它们所处环境使它们这样的。

"Every man is the hero of his own story."

In science, the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.