I wonder why Peirce associated the categories like that. To me it rather seems like matter would be 1ns, form 2ns, and entelechy 3ns. That is because I cannot see more than one mode in matter, but 2 in form: Reason for it, and aim (telos) of it. Aristotle said, that form consists of energy and entelechy, so two parts (modes?). 2.1. might be said like: material reason of the form, or the form´s sustenance by matter, potential energies keeping the form together, and 2.2. the form of the form, or the form´s formal reason, which is it´s aim.
Also, I see "quality" rather associated with matter than with form. As the form of a thing is more likely to change due to circumstances than its matter is, I see "actuality" rather suiting with "form" than with "matter".
Does "entelechy" contain "telos"? Does it mean quite the similar?
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