Heraclitus concerned himself with the knowable portion of the Absolute with his Logos. Plotinus, a Neo-Platonic philosopher, saw all forms of existence as emanating from 'The One'. The One of Plotinus is a trans-sentient power or force. The concept of the Absolute was re-introduced into philosophy by Hegel, Schelling, and their followers; it is associated with various forms of philosophical idealism. The Absolute, either under that name, or as the "Ground of Being", or some similar concept, also figures in several of the attempted proofs of the existence of God, particularly the ontological argument and the cosmological argument. In scholastic philosophy the Absolute was regarded as Pure Act, unadulterated with remaining potential. The concept was adopted into neo-Hegelian British idealism (though without Hegel's complex logical and dialectical apparatus), where it received an almost mystical exposition at the hands of F.H. Bradley. Bradley (followed by others including Timothy L.S. Sprigge) conceived the Absolute as a single all-encompassing experience, rather along the lines of Shankara and Advaita Vedanta. Likewise, Josiah Royce in the United States conceived the Absolute as a unitary Knower Whose experience constitutes what we know as the "external
https://en.wikipedia.org/wiki/Absolute_(philosophy)#Western_cultures
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