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In philosophy and specifically metaphysics, the theory of Forms, theory of Ideas, [1] [2] [3] Platonic idealism, or Platonic realism is a theory widely credited to the Classical Greek philosopher Plato. The theory suggests that the physical world is not as real or true as "Forms".
Plato's most self-critical dialogue is the Parmenides, which features Parmenides and his student Zeno, which criticizes Plato's own metaphysical theories. Plato's Sophist dialogue includes an Eleatic stranger. These ideas about change and permanence, or becoming and Being, influenced Plato in formulating his theory of Forms. [54]
"As being is to becoming, so is truth to belief" (29c). Therefore, in a description of the physical world, one "should not look for anything more than a likely story" (29d). Timaeus suggests that since nothing "becomes or changes" without cause, then the cause of the universe must be a demiurge or a god, a figure Timaeus refers to as the father ...
In philosophy, Plato's epistemology is a theory of knowledge developed by the Greek philosopher Plato and his followers.. Platonic epistemology holds that knowledge of Platonic Ideas is innate, so that learning is the development of ideas buried deep in the soul, often under the midwife-like guidance of an interrogator.
Socrates now raises another topic: the relationship of pleasure to Being and Becoming. This refers to the philosophical distinction between the eternal, perfect, and self-sufficient Being on the one hand, and the transient, imperfect, and dependent Becoming on the other. Being is cause, Becoming is caused. All pleasure arises and passes away.
A human being is thus composed of indefinitely many occasions of experience. The one exceptional actual entity is at once both temporal and atemporal: God. He is objectively immortal, as well as being immanent in the world. He is objectified in each temporal actual entity; but He is not an eternal object. The occasions of experience are of four ...
Plato's theory of the soul, which was inspired variously by the teachings of Socrates, considered the psyche (Ancient Greek: ψῡχή, romanized: psūkhḗ) to be the essence of a person, being that which decides how people behave. Plato considered this essence to be an incorporeal, eternal occupant of a person's being.
Francis Cornford described the twin pillars of Platonism as being the theory of the Forms, on the one hand, and, on the other hand, the doctrine of the immortality of the soul. [10] Indeed, Plato was the first person in the history of philosophy to believe that the soul was both the source of life and the mind. [11]