We are all fragments of great souls, and those are fragments of even greater souls, and so on - until we are all linked to one primordial soul: The soul of Adam.
None of us is complete. No one can stand alone. What one lacks, the other completes; where one is excessive, the other is deficient.
Only together can we find oneness within ourselves. Only together can we be a suitable vessel for the revelation of the Supreme One.
From this arises the idea of True Love. Souls at their source are one. Only bodies divide us. Therefore, a person who makes their body primary and their spirit secondary can never experience True Love.