Abstract
Finding inspiration in Heidegger's lament, "In what soil do the roots of (Descartes's) tree of philosophy find their support?" (and not allowing that the tree might be hydroponic), Steiner proceeds to ground the "concrete content and absolute authority" of Descartes's moral principles in his Christian faith (13). Caught between the two, Descartes's thinking is pulled in opposing directions, towards the "earthly ethos" and its twin ideals of technological mastery over nature and the autonomy of reason, and the "angelic ideal"-a transcendent ideal according to which truth and goodness are conceived sub specie aeternitatis as a gift from God