Full Idea
Ethics is the science of aims.
Gist of Idea
Ethics is the science of aims
Source
Charles Sanders Peirce (The Nature of Mathematics [1898], II)
Book Reference
Peirce,Charles Sanders: 'Philosophical Writings of Peirce', ed/tr. Buchler,Justus [Dover 1940], p.144
A Reaction
Intriguing slogan. He is discussing the aims of logic. I think what he means is that ethics is the science of value. 'Science' may be optimistic, but I would sort of agree with his basic idea.