I heard with alarm that there was another part of me to be kept clean.

How was it to be done?
"Well, just make up your mind that you'll never lie, whatever else you do," he said.

"You can't do anything bad or mean unless you intend to cover it up with lies." What a simple rule was this of the teacher!--and yet--well the very next thing he said was: "Where did you hear all that swearing ?" How could I answer his question truthfully?
I was old enough to know that the truth would disgrace my Uncle Peabody.

I could not tell the truth, therefore, and I didn't.

I put it all on Dug Draper, although his swearing had long been a dim, indefinite and useless memory.
As a penalty I had to copy two maxims of Washington five times in my writing-book.