Platonic Idealism
 Philosophy of “form”, think of a chair and chair appears in the mind exactly.
 Plato’s ideal form of govt, republic, state, communism, etc
 Plato is one of the first philosophers to discuss what might be termed Idealism, although his Platonic Idealism is, confusingly, usually referred to as Platonic Realism. This is because, although his doctrine described Forms or universals (which are certainly non-material "ideals" in a broad sense), Plato maintained that these Forms had their own independent existence, which is not an idealist stance, but a realist one. However, it has been argued that Plato believed that "full reality" (as distinct from mere existence) is achieved only through thought, and so he could be described as a non-subjective, "transcendental (going beyond the limits of human knowledge, experience or reason, especially in a religious or spiritual way)" idealist, somewhat like Kant.
 The Neo-Platonist Plotinus came close to an early exposition of Idealism in the contentions in his "Enneads" that "the only space or place of the world is the soul", and that "time must not be assumed to exist outside the soul". However, his doctrine was not fully-realized, and he made no attempt to discover how we can get beyond our ideas in order to know external objects.