What if the human 'soul' is the predisposition one takes on new encounters in life (based on previous events).
Forcing someone to be less optimistic or good-faith-assuming because you're collectively being complete assholes to them, may well be a contribution to "destroying one's soul". Often a hint of "nature" of someone is revealed quickly, but we have trouble interpreting it correctly.
It makes you wonder how invisible the soul is and how blind many are to the true impact they have on (others') life.
For all the searching humans have done for the 'soul', I truly wonder if it is something this simple yet this fundamentally rooted in human intelligence, both knowledge and experience.