I. The business of Man not to pry into God, but to study himself. His middle nature; his powers and frailties, ver. 1 to 19. The limits of his capacity, ver. 19, &c. II. The two principles of Man, self-love and reason, both necessary, ver. 53, &c. Self-love the stronger, and why, ver. 67, &c. Their end the same, ver. 81, &c. III. The passions, and their use, ver. 93-130. The predominant passion, and its force, ver. 132-160. Its necessity, in directing men to different purposes, ver. 165, &c. Its providential use, in fixing our principle, and ascertaining our virtue, ver. 177. IV. Virtue and vice joined in our mixed nature; the limits near, yet the things separate and evident: What is the office of reason, ver. 202-216. V. How odious vice in itself, and how we deceive ourselves into it, ver. 217. VI. That, however, the ends of Providence and general good are answered in our passions and imperfections, ver. 238, &c. How usefully these are distributed to all orders of men, ver. 241. How useful they are to society, ver. 251. And to the individuals, ver. 263. In every state, and every age of life, ver. 273, &c. I. KNOW then thyself, presume not God to scan; The proper study of mankind is Man. Placed on this isthmus of a middle state, A being darkly wise, and rudely great: With too much knowledge for the sceptic side, With too much weakness for the stoic's pride, He hangs between; in doubt to act, or rest; In doubt to deem himself a god, or beast; In doubt his mind or body to prefer; Born but to die, and reasoning but to err; 10 Alike in ignorance, his reason such, Whether he thinks too little, or too much: Chaos of thought and passion, all confused; Still by himself abused, or disabused; Created half to rise, and half to fall; Great lord of all things, yet a prey to all; Sole judge of truth, in endless error hurl'd: The glory, jest, and riddle of the world![89] Go, wondrous creature! mount where science guides, Go, measure earth, weigh air, and state the tides; 20 Instruct the planets in what orbs to run, Correct old Time, and regulate the sun; Go, soar with Plato to the empyreal sphere, To the first Good, first Perfect, and first Fair; Or tread the mazy round his followers trod, And quitting sense call imitating God; As eastern priests in giddy circles run, And turn their heads to imitate the sun. Go, teach Eternal Wisdom how to rule-- Then drop into thyself, and be a fool! 30 Superior beings, when of late they saw A mortal man unfold all Nature's law, Admired such wisdom in an earthly shape, And show'd a Newton as we show an ape. Could he, whose rules the rapid comet bind, Describe or fix one movement of his mind? Who saw its fires here rise, and there descend, Explain his own beginning, or his end? Alas, what wonder! Man's superior part Uncheck'd may rise, and climb from art to art; 40 But when his own great work is but begun, What reason weaves, by passion is undone.