A moral being is one who is capable of comparing his past and future actions or motives, and of approving or disapproving of them.

A moral being is one who is capable of comparing his past and future actions or motives, and of approving or disapproving of them.

一个有道德的人是能够比较他的过去和未来的行为或动机，并赞成或反对他们。

-- Charles Darwin 查尔斯·达尔文