Aristotle, Nicomachean Ethics
H. Rackham, Ed.

Is not then the next question to consider from whom or how the science of legislation can be learnt? Perhaps, like other subjects, from the experts, namely the politicians; for we saw¹ that legislation who is a branch of political science. But possibly it may seem that political science is unlike the other sciences and faculties. In these the persons who impart a knowledge of the faculty are the same as those who practice it, for instance physicians and painters; but in politics the sophists, who profess to teach the science, never practice it. It is practiced by the politicians, who would appear to rely more upon a sort of empirical skill than on the exercise of abstract intelligence; for we do not see them writing or lecturing about political principles （though this might be a more honorable employment than composing forensic and parliamentary speeches）, nor yet do we notice that they have made their own sons or any others of their friends into statesmen.