Ridling, Philosophy Then and Now: A Look Back at 26 Centuries of Thought
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Western Types
Berkeley’s Idealism is called subjective Idealism because he reduced
reality to spirits (his name for subjects) and the ideas entertained by spirits. In
Berkeley’s philosophy the apparent objectivity of the world outside the self
was accommodated to his subjectivism by claiming that its objects are ideas in
the mind of God. The foundation for a series of more objective Idealisms was
laid in the late 18th century by Immanuel Kant, whose epochal work Kritik
der reinen Vernunft (2nd ed., 1787; Critique of Pure Reason, 1929) presented
a formalistic or transcendental Idealism, so named because Kant thought that
the human self, or “transcendental ego,” constructs knowledge out of sense
impressions, upon which are imposed certain universal concepts that he called
categories. Three systems constructed in the early 19th century by,
respectively, the moral Idealist J.G. Fichte, the aesthetic Idealist F.W.J.
Schelling, and the dialectical Idealist G.W.F. Hegel, all on a foundation laid
by Kant, are called objective Idealisms in contrast to Berkeley’s subjective
Idealism. The designations, however, are not consistent; and when the contrast
with Berkeley is not at issue, Fichte himself is often called a subjective
Idealist, inasmuch as he exalted the subject above the object, employing the
term Ego to mean God in the two memorable propositions: “The Ego posits
itself” and “The Ego posits the non-Ego (or nature).” And in contrast now to
the subjective Idealism of Fichte, Schelling’s is called an objective Idealism
and Hegel’s an absolute Idealism.
All of these terms form backgrounds for contemporary Western
Idealisms, most of which are based either on Kant’s transcendental Idealism
or on those of Fichte, Schelling, and Hegel. Exceptions are those based on
other great Idealists of the past – Plato, Plotinus, Spinoza, Leibniz, and others.
A revised form of Spinoza’s spiritual monism, for example, which held that