The article treats again the question of whether “the Idea of the Good is a Reality in the Universe, or beyond it. Is it immanent or transcendent?” (Rufus Jones, 1863-1948). Plato scholars such as Matthias Baltes (1940 2003) and Luc Brisson have defended the thesis that Plato’s Idea of the Good is, on the one hand, beyond being (epekeina tês ousias) in dignity and power, but on the other, is nevertheless not transcendent over being. The article delivers first (I), the most important arguments for the thesis of Baltes and Brisson. Then (II), it gives two counterarguments against the thesis. Third (III), it concludes with some general questions concerning the deflationist interpretation of Plato’s "Republic" 509b9-10 and defends again the transcendence of the Idea of the Good.