The reason why men enter into society is the preservation of their property.
When you want to help people, you tell them the truth. When you want to help yourself, you tell them what they want to hear.
The tears of the world are a constant quantity. For each one who begins to weep, somewhere else another stops. The same is true of the laugh.
科学不仅仅是事实的集合;它是一种思考方式。