The true felicity of life is to be free from perturbations, to understand our duties towards God and man: to enjoy the present without any anxious dependence upon the future. Not to amuse ourselves with either hopes or fears, but to rest satisfied with what we have, which is abundantly sufficient; for he that is so, wants nothing. The great blessings of mankind are within us, and within our reach; but we shut our eyes, and, like people in the dark, we fall foul upon the very thing which we search for without finding it. “Tranquillity is a certain equality of mind, which no condition of fortune can either exalt or depress.” Nothing can make it less: for it is the state of human perfection: it raises us as high as we can go; and makes every man his own supporter; whereas he that is borne up by any thing else may fall. He that judges aright, and perseveres in it, enjoys a perpetual calm: he takes a true prospect of things; he observes an order, measure, a decorum in all his actions; he has a benevolence in his nature; he squares his life according to reason; and draws to himself love and admiration. Without a certain and an unchangeable judgment, all the rest is but fluctuation: but “he that always wills and nills the same thing, is undoubtedly in the right.” Liberty and serenity of mind must necessarily ensue upon the mastering of those things which either allure or affright us; when instead of those flashy pleasures, (which even at the best are both vain and hurtful together,) we shall find ourselves possessed of joy transporting and everlasting. It must be a _sound mind_ that makes a _happy man_; there must be a constancy in all conditions, a care for the things of this world, but without trouble; and such an indifferency for the bounties of fortune, that either with them, or without them, we may live contentedly. There must be neither lamentation, nor quarrelling, nor sloth, nor fear; for it makes a discord in a man’s life.