True intelligence cast a shadow. It's called out intelligence. Those who are out intelligent know a great about things outside of themselves. But they are not intelligent. You can only be intelligent when you understand what is going on within your own self.

Prejudice is a lack of intelligence.

They say never judge a book by its cover. And you should never judge a being by his or her colour. The body is like a cover on a book. When you act if beings are black and white, you judging a being by its cover.
Only a fool would give someone a job knowing that they don't have the ability to do the job. Well, God is no fool. Why give us life without the ability to understand life.