Charles Sanders Peirce on The Ethical Imperative

"If I had a son, I should instill into him this view of morality (that is, that Ethics is the science of the method of bringing Self-Control to bear to gain satisfaction) and force him to see that there is but one thing that raises one individual animal above another,--Self-Mastery; and should teach him that the Will is free only in the sense that, by employing the proper appliances, he can make himself behave in the way he really desires to behave. As to what one ought to desire, it is, I should teach him, what he will desire if he sufficiently considers it, and that will be to make his life beautiful, admirable. Now the science of the Admirable is true Esthetics." (As quoted in Brent, Peirce: A Life, p49).

Cap tip Aaron.