It is very easy to be efficient if the efficiency is based on unscrupulousness, and it is still easier to be virtuous if one is content with the purely negative virtue which consists in not doing anything wrong, but being wholly unable to accomplish anything positive for good.
 Theodore Roosevelt, Theodore Roosevelt; an Autobiography (1913). copy citation

Context

“It was my business to devise methods by which either the two machines could be kept apart or else overthrown if they came together. My desire was to achieve results, and not merely to issue manifestoes of virtue. It is very easy to be efficient if the efficiency is based on unscrupulousness, and it is still easier to be virtuous if one is content with the purely negative virtue which consists in not doing anything wrong, but being wholly unable to accomplish anything positive for good. My favorite quotation from Josh Billings again applies: It is so much easier to be a harmless dove than a wise serpent. My duty was to combine both idealism and efficiency. At that time the public conscience was still dormant as regards many species of political and business misconduct, as to which during the next decade it became sensitive.” source