Spiritual principles are Unchanging self-existent Truth
The Real spirituality is that which is based upon Truth and not personal motives of temporal gain, greed, lust,& ambition, or retardation and intellectual deficiency.
Spiritual Science needs no Extrinsic verifiable data.
non-spiritual / Physical, BioChem and Quantum Sciences:
Depends upon extrinsic Verifiable data.
It is in Intrinsic nature of Spirit ( Truth is of an Immortal spirit ) to manifest , and the Manifested can be measured / perceived/sensed/ observed via non-violent processes/methods.
Objective Reality/ Knowing Truth is very possible.
The "spirit" as Wind is perceivable/ speed, thickness, effects& direction are knowable.
God is not an emptiness, nothing or subjective:
Spiritual realities as " 'spirit soul body' in all Sentience, cause Effect phenomenon, pain Pleasure Motives and Mechanisms , and Eternal energy of Truth " are self-evident, pre-existent, universal, eternal and objective Truths ; these Truths are manifested in Energy fields, Spiritual quotients, electro magnetic Activities and Bio chem Factors.