Page:The Art of Preserving Health - A Poem in Four Books.djvu/111

 HE choice of aliment, the choice of air, The use of toil and all external things, Already sung; it now remains to trace What good what evil from ourselves proceeds: And how the subtle principle within Inspires with health, or mines with strange decay The passive body. Ye poetic Shades, That know the secrets of the world unseen, Rh