What is the true purpose of the faculty of reason, according to Kant?
A) To discover truth
B) To pursue happiness
C) To know God
D) To produce a good will

Question

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Kant, a central figure in modern philosophy, argued that the highest good is the good will, and reason's primary role is to produce it. In his works, particularly in "Groundwork for the Metaphysics of Morals," Kant posits that a good will is the only thing that is good without qualification. Unlike talents of the mind or gifts of fortune, which can be used for ill purposes, a good will is intrinsically good. Its value does not depend on the outcomes it produces, but rather on the intention behind the actions it motivates.
Reason, for Kant, is the faculty that enables humans to discern moral laws and to act according to principles that have universal validity, which he calls categorical imperatives. The use of reason leads to autonomy, the ability to govern oneself by rational principles, and thus to act morally. Reason is not primarily for discovering empirical truths about the world (A), nor is it for the pursuit of happiness (B), which Kant sees as a contingent and subjective end. While reason can lead to a contemplation of the divine (C), this is not its primary purpose in the ethical domain.
In summary, Kant believes that reason's ultimate purpose is to enable us to act according to a good will, which is the foundation of morality and the source of moral worth.

What Is the True Purpose of the Faculty of Reason