I'm still not sure what "spirit" is, but due to the inter-connected nature of mind and body I believe whole-heartedly in the potential for physical paths to enlightenement, as well as intellectual ones. Whatever parts we are comprised of, they're all there moving along as we take each step, be they literal or proverbial.
Also, aren't there Gnostic and other Greek views which take the "proper" application of intellect as a gateway to enlightenment? Whatever the case is for others, that seems reasonable to me.
No, no greek paths based on intellect. No gnostic paths based on physical and mental. All paths are based on spiritual.
Mystics or gnostics may call it esoteric knowledge. All religious mysticism is based on esoteric, spiritual truths. Different form of 'knowledge', not the intellectual logic form based on physical.