Reasons whole pleasure, all the joys of sense, Lie in three words, Health, Peace, and Competence: But health consists with Temperance alone; And Peace, O Virtue! Peace is all thy own. Pope.Essay on Man, Epi. IV. Line 79.
Ah! what avail the largest gifts of Heaven, When drooping health and spirits go amiss? How tasteless then whatever can be given! Health is the vital principle of bliss. Thomson.Castle of Indolence, Canto II. Stanza 57.