What wreath for Lamia? What for Lycius? What for the sage, old Apollonius? Upon her aching forehead be there hung The leaves of willow and of adder's tongue; And for the youth, quick, let us strip for him The thyrsus, that his watching eyes may swim Into forgetfulness; and, for the sage, Let spear-grass and the spiteful thistle wage War on his temples. Do not all charms fly At the mere touch of cold philosophy? There was an awful rainbow once in heaven: We know her woof, her texture; she is given In the dull catalogue of common things. Philosophy will clip an Angel's wings, Conquer all mysteries by rule and line, Empty the haunted air, and gnomed mine - Unweave a rainbow, as it erewhile made The tender-person'd Lamia melt into a shade.