Oneness (n.) creeps back as a vague wish for those who pay homage to extreme nominalism: having dissolved everything into particulars, they long for an All-oneness that is superlatively improbable and arbitrary.
Oneness (n.) as mystics feel it probably comes from the blurring of everything in the unconscious: try to imagine a state where nothing is distinct and you feel the whole as one.
Oneness (n.) is what the self gives the whole alchemical work: the same thing at beginning and end, always there yet appearing only at the end, inconceivable yet necessary as an intuitive concept.
Oneness (n.) must come first, Dorn told the adept: you will never make from other things the One you seek unless one thing is first made of yourself.
Oneness (n.) as a medicine presupposes a dissociated consciousness: no one who is one needs it, nor does one unaware of his split, since conscious distress is needed to activate the archetype of unity.