Self awareness, free thought, free will, perception of meaning (ie reading, interpretation of language), the ability to believe or disbelieve - they all evidence for a spiritual soul which perceives, not just reacts.
More accurate to say these things (self awareness etc) are characteristics of a human
person. We could all probably agree that. But I'm sure you mean much more by
soul, and these attributes do not constitute evidence for the difference. We all have an intuition of a
me inside being in control and being in receipt of experience. But you cannot even say what this
soul is beyond being a person, you cannot describe its nature, its size, its location, its substance, its provenance other than in vague religious terms. So how could such commonplace attributes count as evidence as there is nothing tangible or measurable in your definition of
soul to falsify or validate ?