Abstract
The purpose of this study is to elucidate how the Greek concept of God influenced the formation of Platonic philosophy by examining the terms 'theios' & Theos, as used in his dialogues. In the first chapter, we have highlighted how the collective representation brought by the immediate ‘participation mystique’ with the sacred force(mana) is evolved into the notion of Daimon or Theos as a mediator which will tie the human-being with the sacred force, & how the Greek Theos evolves from the Daimon as a primitive emotional personification acting as a subject of magical rituals into the Theos as a rational personification acting as a subject of selfconsciousness & free-will of the human-being. In the second chapter, we have clarified how the polysemy of the terms: Theios & Theos allows Plato to elaborate a new concept of God & to thereby successfully transform mythological story of the world into a philosophical explanation. In the third chapter, we have brought into relief the process in which Plato has formed unconsciously the concept of Idea from the notion of Theos. In fact, it seems inevitable that the philosopher attempting to construct the system of reasonable explanation of the harmonic cosmos resorts to the property of wholeness & perfectness of Theos. The fourth chapter was concentrated to scrutinize the structure of Platonic thought which describes Demiourgos as 'l'artisan du monde' who recreates or reorganizes the world order on seeing the Idea of the Good (bonum). From our examination of the influence the Greek concept, Theos, had on Platonic Philosophy, we are able to conclude that Plato transformed the religious perfectness into the philosophical & metaphysical perfectness. As a result, this study will open the way for a new understanding of the relation between the Greek Theos, & the Ideas, Demiourgos.