Non-stupid people always underestimate the harmful potential of stupid people; they constantly forget that at any time anywhere, and in any circumstance, dealing with or associating themselves with stupid individuals invariably constitutes a costly error.
As persoas non estúpidas infravaloran sempre o potencial nocivo das persoas estúpidas; esquecen constantemente que en calquera momento e lugar, e en calquera circunstancia, tratar ou asociarse con individuos estúpidos constitúe infaliblemente un custoso erro.