I have a good friend/neighbor who lost his arm in a farming related accident.  We seldom notice his "disability" because he has so much ability that it masks what he struggles with.

I called him this summer about a part and he had one he would sell.  Without thinking I said: "I suppose you want and arm and a leg for it?"  Then I remembered and went on to say: "Well, at least an arm."  We both laughed and I apologized and he mentioned a similar incident.

We have to realize that things happen unfortunately, and learn to accept people based on their character, or even their lack of character.  We need to walk a mile in their shoes; "their" being anyone we tend to put down for ANY reason.