GE Morton wrote: ↑January 31st, 2020, 12:03 pmLike TP I'm having a hard time puzzling out what you are saying there. I don't know what you mean by "backward reasoning cannot give rise to what is valued." I don't know what "backward reasoning" is, and I've certainly never claimed it "gives rise" to what is valued. What gives rise to values is, in most cases, quite mysterious. We just have them; we can't explain them.*
Nor am I clear as to what you're saying with, "It cannot be the purpose by which life derives value." Values give rise to purposes, not the other way around. If we value something we often undertake to secure it or protect or preserve it. We call a value we are taking actions to secure the purpose of those actions. You seem to be using "purpose" as something independent from the interests and actions of persons (or other sentient creatures). You'll have to spell out how you identify those "purposes" and assess the truth of propositions asserting them.
Value is not a property of things; it is a relation between a thing and a person, the valuer, the relation being that the thing is desired by that person. Propositions asserting values are non-cognitive --- they have no determinable truth values --- unless a valuer is specified.
* This is true for primary values, or "end goods" --- the things we desire "for themselves." Those are unsummoned, spontaneous, and inexplicable. No one who, say, loves chocolate can explain, in any non-circular, informative way, why he loves it. He just does.
But there are also "means goods" --- things we desire because they are useful, or perhaps necessary, to secure some end good. Those are explicable.
It is correct that value requires a valuer. What is called value has passed before it can be valued. It is only after the discovery that it can be considered.
This may explain your statement that the origin of value is a mystery.
What gives rise to values is, in most cases, quite mysterious. We just have them; we can't explain them.
It leads to the implication that what is "good" must be independent from the valuer. What is considered value follows "good". It isn't created by the valuer.
With regard to purpose. Considering that value follows "good", value cannot be an end or purpose by itself as it would result in corruption.
A result applicable to "good" can be evaluated as value. It could be considered the origin of value and the essence of purpose. Value follows from the discovery of "good" and thus the valuer (the human) can find purpose in the serving of life by discovering what is "good".
It may explain why Aristotle considers philosophical contemplation the highest virtue. It is a strive to serve life: the discovery of "good" from which value follows.
Considering that for the concept value to exist, it is required that "good" existed beforehand, it follows that a purpose of life is essential for value to be possible.
From the essentiality of purpose it can be derived that a basis of respect is required for plants and animals. They will serve life similar to humans do and their discovery of "good" will result in intrinsic value that no valuer can imagine beforehand.
My argument is that you cannot stand above life as being life and that you can only serve life. A basis of respect for Nature (plants and animals) could be considered essential.