He promoted a certain neo-platonist dimension in the Dominican spirituality of his time.
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As a neo-platonist, his influence on Islamic philosophy is primarily in the area of ethics.
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To a platonist, one who believes in the literal eternal existence of mathematical objects this is non-controversial.
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Platonist ethics is based on the Form of the Good.
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Since then, a number of philosophers, such as Crispin Wright and Bob Hale have defended and developed this neo-platonist account of mathematics.
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A platonist, however, would assert that there either does or does not exist a transfinite set with a cardinality less than the continuum but greater than any countable set.
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For example, in the neo-platonist account of Plotinus, the cosmos has one soul, which is the seat of all reason, and the souls of all individual humans are part of this soul.
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More examples
An advocate of Platonism
(platonic) of or relating to or characteristic of Plato or his philosophy; "Platonic dialogues"
(platonic) free from physical desire; "platonic love"
(platonism) (philosophy) the philosophical doctrine that abstract concepts exist independent of their names
Platonism is the philosophy of Plato or the name of other philosophical systems considered closely derived from it. In a narrower sense the term might indicate the doctrine of Platonic realism. ...
(platonic) Of or relating to the philosophical views of Plato and his successors; Not sexual in nature (sense derived through a popular interpretation of the above views)
(Platonic) Five fundamental convex polyhedra. They have regular faces and identical vertices.
(Platonic) love in its modern popular sense is an affectionate relationship into which the sexual element does not enter, especially in cases where one might easily assume otherwise.
(Platonism) The embracing of the doctrines of the philosopher Plato, popular among the poets of the Renaissance and the Romantic period. Platonism is more flexible than Aristotelian Criticism and places more emphasis on the supernatural and unknown aspects of life. ...