大分子的概念并不容易被接受;它需要化学家对物质结构的思考方式发生彻底的改变。
生活在美国宪法下是人类历史上赋予的最伟大的政治特权。
The more we learn, the more we realize how little we know.
When you forgive others, they may not notice, but you will heal. Forgiveness is not something we do for others; it is a gift to ourselves.