Metaphysics: Key Themes in Western Philosophy
Introduction to Key Themes in Western Metaphysics
Six fundamental themes recur in Western metaphysics, coinciding with core philosophical problems: 1) God and the world, 2) the infinite and the finite, 3) the soul and the external world, 4) being and existence, 5) the individual, and 6) intellect and will. Christian Wolff proposed four parts of philosophy: ontology (being), cosmology (world), psychology (soul), and rational natural theology (God), explored in his work Rational Thoughts about God, the World and the Soul of Man, as well as All Things in General. The issues raised by Wolff and Heimsoeth are intertwined, making it challenging to address the philosophical question of God.
God
The question of God falls within natural theology or theodicy. Natural theology, a part of metaphysics, studies the concept of God and related questions using reason, without relying on revelation or faith (the domain of revealed theology). God is conceived as the first principle of reality, the ultimate foundation. Aristotle’s concept of God as the unmoved mover, desired by all, possessing omniscience, omnipotence, and infinite goodness, has influenced philosophical thought. Some philosophers, like Spinoza, equate God with the entire universe, a position known as pantheism. In this view, not only is the whole God, but so is each part.
Classically, God is named the supreme and infinite being, the first principle or creator of the universe. Natural theology or theodicy studies God, employing rational arguments to prove God’s existence. In philosophical discussions, God often serves as the guarantor of the moral order.
The Soul
The soul is a self-existing being, traditionally considered a simple, immaterial, and immortal substance responsible for human understanding, will, and feeling. It is also seen as the basis of moral activity and personal identity. The relationship between the immaterial soul and the material body is problematic. Today, the concept of “mind” has largely replaced “soul” in philosophical discourse.
World
In philosophy, “world” refers to all things, both existing and potential, and their changes—the universe, the entirety of reality. Rational cosmology studies the world’s general properties: its composite, interconnected, orderly, and changing nature.
Finitude
Finitude is the quality of finite beings, meaning limited beings. It refers to limits in existence, mortality, and qualities or perfections. A finite being has limited capabilities.
Infinity
Infinity is the quality of having no limit, term, or end. There are distinctions between actual infinity and potential infinity.
Omnipotence
Omnipotence is an attribute unique to God, consisting of the power to do all things without limitation.
Omniscience
Omniscience is another attribute unique to God, referring to the ability to know everything.
Being
As a noun, “being” can refer to the essence or nature of a thing or the thing itself, whether it actually exists or is only possible. As a verb, it has two meanings: a) as a copula (linking verb) and b) as a verb of existence. This distinction is crucial because it separates logic from real existence. The set of logical beings (possible) is always larger than the set of actually existing beings.
Pantheism
Derived from Greek, pantheism holds that God is everything, the entire universe, and also each part of the universe, which express or manifest the total divinity. It is sometimes used to characterize Spinoza’s philosophy.
Theodicy
Coined by Leibniz, theodicy (from Greek) is exemplified in his 1710 book Theodicy: Essays on the Goodness of God, the Freedom of Man and the Origin of Evil. In it, Leibniz attempts to justify or defend God’s power, wisdom, and goodness against potential accusations.