Martin Luther King was a medical from EEUU that work all his life from human rights of color peaple in his country.
He was a grate speaker and his speeches touched all the American people.
In one of that speeches he describing some of human characteristics.
He said is there are three vision of person:
First, there are people who consider the human is unscrupulous animal.
Second, there are people who think the men is an idealistic being. "In action how like an angel" says King.
And some other people, more realistic, think the man is a being dichotomy; same time the man do wrong and they are very selfish, and the other time the man do generous and idealistic.