Voluntarism is "any metaphysical or psychological system that assigns to the will (Latin: voluntas) a more predominant role than that attributed to the intellect", or, equivalently, "the doctrine that will is the basic factor, both in the universe and in human conduct". This description has been applied to various points of view, from different cultural eras, in the areas of metaphysics, psychology, political philosophy, and theology.
The term "voluntarism" was introduced by Ferdinand Tönnies into the philosophical literature and particularly used by Wilhelm Wundt and Friedrich Paulsen.
Associated with Duns Scotus and William of Ockham (two of the foremost medieval scholastic philosophers), voluntarism is generally taken to be the philosophical emphasis on the divine will and human freedom. For example, Scotus held that morality comes from God's will and choice rather than his intellect or knowledge. Accordingly, God should be defined as an omnipotent being whose actions should not and cannot be ultimately rationalized and explained through reason. As such, voluntarism is usually contrasted with intellectualism, championed by the scholastic Thomas Aquinas.
'Theological voluntarism' also refers to theological commitments—that is, specific interpretations of doctrines of Christianity—arguably held by certain early modern natural philosophers such as Pierre Gassendi, Walter Charleton, Robert Boyle,Isaac Barrow, and Isaac Newton.