What Stoic doctrines in Physics do I have to accept to apply Ethics rationally?
Stoic ethics are very useful, but ethics are tied to physics.
I can't rationally apply Stoic ethics if the belief in the physics that grounds the ethics isn't there. What I mean by rational, is not doing it simply as a coping mechanism(common critique in my community).
An example:
I don't believe that the pneuma(active principle) and matter(passive principle) are observed to us as the 4 elements(earth, water, fire, and air). Because we have modern science.
But, I believe in compatibilism and a teleology all humans have. Stoic ethics seems to require me to believe I have an intrinsic telos.
It's much easier to apply something I truly believe.
So, what in physics is necessary for me to accept to rationally apply some part of ethics.