Idealism

Idealism, the philosophical view that the mind or spirit constitutes the fundamental reality, has taken several distinct but related forms. Objective idealism accepts common sense Realism (the view that material objects exist) but rejects Naturalism (according to which the mind and spiritual values have emerged from material things), whereas subjective idealism denies that material objects exist independently of human perception and thus stands opposed to both realism and naturalism.
Plato is often considered the first idealist philosopher, chiefly because of his metaphysical doctrine of F…