Lucy, dear child, mind your arithmetic. You know in the first sum of yours I ever saw there was a mistake. You had carried two (as a cab is licensed to do), and you ought, dear Lucy, to have carried but one. Is this a trifle? What would life be without arithmetic, but a scene of horrors.
Sydney SmithAmong the smaller duties of life I hardly know any one more important than that of not praising where praise is not due.
Sydney Smith