This methodological naturalist denies "spirituality", and prefers to talk about personality. Logic is a framework for thought which provides some measure of confidence in the thought process in addition to confidence brought on by experience.
We can go down the epistemological rabbit hole, but there is nothing at the bottom but an argument anyway, and one that I find uninteresting anymore. I am not a philosopher, I prefer to get out of the chair and train.
How do you define personality then as distinctive from or different to spirituality? I am only asking because I am interested, we are all martial artists on this forum and I agree it's best to get out of the chair and train.