George Washington's Rules - #21

George Washington's Rule #21 seems easy enough, to me, to understand, but I'll go ahead and give you a translation:

21st

Reproach none for the Infirmities of Nature, nor Delight to Put them that have in mind thereof.

To me this seems to mean do not "correct" someone for something they have no control over, whether they are lame and limp, or maybe have a lisp and mis-speak. Don't even draw their attention to the fact that you notice their condition. It's not nice.