This paper aims to inquire, based on certain passages from Rousseau and Kant, if the bringing together of these philosophers could be fruitful in order to think a notion of human being compatible with that of dignity, which is evidently important in contemporary political philosophy. We shall begin by reconstructing Cassirer's arguments, showing why Kant turns into the direction of reason instead of feeling, and making a parallel between both philosophers in regard to the founding of morality. In the end, we shall question if Rousseau's comprehension of human subjectivity, centered on the notion of piety, could be a good source of inspiration to, in association with Kant's moral philosophy, think human subjectivity and that which, within the latter, would motivate us to act morally.