Happyism
Then, in the eighteenth century, our earthly happiness became important to us, in high intellectual fashion. By 1776, “life, liberty, and the pursuit of happiness” was an unoriginal formulation of what we all, of course, now admitted that we chiefly wanted. John Locke had taught, in 1677, that “the business of men [is] to be happy in this world by the enjoyment of the things of nature subservient to life, health, ease, and pleasure”—though he added piously, “and by the comfortable [that is, comforting] hopes of another life when this is ended.” By 1738, the Comte de Mirabeau wrote to a friend, recommending simply, “[W]hat should be our only goal: happiness.”
http://www.tnr.com/article/politics/magazine/103952/happyism-deirdre-mccloskey-economics-happiness