The paper considers the issue of moral motivation in light of recent construals and accounts of Freud's views. It attempts to show the merits of taking some Freudian claims, especially those concerning the development of superego, as giving a plausible naturalistic picture of dynamic process of assimilation of Kantian categorical imperative. In the course of this attempt the views of such philosophers as R. Wollheim, J. Lear, and D. Velleman are being invoked and discussed.