The only objects of practical reason are therefore those of good and evil. For by the former is meant an object necessarily desired according to a principle of reason; by the latter one necessarily shunned, also according to a principle of reason.
Immanuel Kant (2015). “The Critique of Practical Reason: Theory of Moral Reasoning: From the Author of Critique of Pure Reason, Critique of Judgment, Dreams of a Spirit-Seer, Perpetual Peace & Fundamental Principles of the Metaphysics of Morals”, p.51, e-artnow