postulates of practical reason
A technical term in Kantian philosophy referring to the three postulates (freedom, immortality of the soul, and existence of God) that practical reason must assume for morality to be possible.
Kant's postulates of practical reason refer to the three postulates that reason must presuppose in order to ground the possibility of morality.
A direct translation of the German 'Postulate der praktischen Vernunft', a term from Immanuel Kant's philosophy. The Japanese phrase is a calque using 実践 (practical), 理性 (reason), and 要請 (postulate/demand).