If efficiency is left solely to bad men, and if virtue is confined solely to inefficient men, the result cannot be happy.
 Theodore Roosevelt, Theodore Roosevelt; an Autobiography (1913). copy citation

Context

“Of course the one thing which corrupt machine politicians most desire is to have decent men frown on the activity, that is, on the efficiency, of the honest man who genuinely wishes to reform politics. If efficiency is left solely to bad men, and if virtue is confined solely to inefficient men, the result cannot be happy. When I entered politics there were, as there always had been—and as there always will be—any number of bad men in politics who were thoroughly efficient, and any number of good men who would like to have done lofty things in politics but who were thoroughly inefficient.” source