Blot your misdeeds out (if you are particularly...

Blot your misdeeds out (if you are particularly conscientious), by a good deed, as soon as you can; just as we did a correct sum at school on the slate, where an incorrect one was only half rubbed out. It was better than wetting our sponge with our tears; both less loss of time where tears had to be waited for, and a better effect at last.