Metaphysics is the branch of philosophy responsible for the study of existence. It is the foundation of a worldview. It answers the question "What is?" It encompasses everything that exists, as well as the nature of existence itself. It says whether the world is real, or merely an illusion. It is a fundamental view of the world around us.
Why is Metaphysics important?
Metaphysics is the foundation of philosophy. Without an explanation or an interpretation of the world around us, we would be helpless to deal with reality. We could not feed ourselves, or act to preserve our lives. The degree to which our metaphysical worldview is correct is the degree to which we are able to comprehend the world, and act accordingly. Without this firm foundation, all knowledge becomes suspect. Any flaw in our view of reality will make it more difficult to live.
What are the key elements of a rational metaphysics?
Reality is absolute. It has a specific nature independent of our thoughts or feelings. The world around us is real. It has a specific nature and it must be consistent to that nature. A proper metaphysical worldview must aim to understand reality correctly.
The physical world exists, and every entity has a specific nature. It acts according to that nature. When different entities interact, they do so according to the nature of both. Every action has a cause and an effect. Causality is the means by which change occurs, but the change occurs via a specific nature.