Peirce emphasized the intricate relationships among the Big Three Normative Sciences — Aesthetics, Ethics, Logic — a topic early and often discussed in the secondary literature and on the Peirce List. One might also compare Theodore Parker’s well-known thesis:
I do not pretend to understand the moral universe;
the arc is a long one, my eye reaches but little ways;
I cannot calculate the curve and complete the figure by
the experience of sight; I can divine it by conscience.
And from what I see I am sure it bends towards justice.
Questions about the interdependence of the principal normative sciences — Aesthetics, Ethics, Logic — just came up on another blog and prompted me to go looking for some of my earlier grapplings with the subject. There’s an initial fragment of that harvest in the following post.