You should never put a cotton swab or other object into the ear canal.

VOA: special.2010.03.31

But,I believe you should never criticize others for something you would do yourself.

VOA: special.2010.05.09

"I was raised on a small farm in southern Indiana and Dad tried to teach me and my brothers that you should never try to be better than someone else.

VOA: special.2010.06.10

"I was raised on a small farm in southern Indiana and Dad tried to teach me and my brothers that you should never try to be better than someone else, always learn from others and never cease trying to be the best you could be, that is under your control."

VOA: standard.2010.06.05