- Rational versus empirical. Rationalism is a method or a theory “in which the criterion of the truth is not sensory but intellectual and deductive” (Bourke 263). Rationalist metaphysicians aim to deduce the nature of reality by armchair, a priori reasoning. Empiricism holds that the senses are the primary source of knowledge about the world.
- Analytical versus systemic. The “system building” style of metaphysics attempts to answer all the important questions in a comprehensive and coherent way, providing a theory of everything or complete picture of the world. The contrasting approach is to deal with problems piecemeal.
- Dogmatic versus critical. Under the scholastic approach of the Middle Ages, a number of themes and ideas were not open to be challenged. Kant and others thought this “dogmatism” should be replaced by a critical approach.
- Individual versus collective. Scholasticism and Analytical philosophy are examples of collaborative approaches to philosophy. Many other philosophers expounded individual visions.
- Parsimonious versus Adequate. Should a metaphysical system posit as little as possible, or as much as needed?
- Descriptive versus revisionary. Peter Strawson makes the distinction between descriptive metaphysics, which sets out to investigate our deepest assumptions, and revisionary metaphysics, which sets out to improve or rectify them.[14]
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