法律体系的存在是一个事实问题，而不是道德问题。
The existence of a legal system is a matter of fact, not of morality.
"In the world of finance, trust is the most valuable currency."
Sometimes we get sad about things and we don’t like to tell other people that we are sad about them. We like to keep it a secret. Or sometimes, we are sad but we really don’t know why we are sad, so we say we aren’t sad but we really are.
