Both Aristotle and Kant note that the highest form of friendship enables individuals of good virtue to reveal themselves to one another. I argue that Aristotle and Kant emphasize complementary aspects of self-disclosure in friendship: whereas Kant acknowledges the inherent value of self-disclosure in friendship, Aristotle suggests that joint perception in friendship is instrumentally valuable in the acquisition of self-knowledge. I also argue that although Aristotle has a more developed account of friendship, Kant advances a superior account of self-disclosure in (...) friendship in his later remarks on friendship in the Metaphysical Principles of Virtue. (shrink)