“Our happiness consists in fulfilling the purpose of our being. Every man knows, from his own unfulfilled hunger for them, that he was built with a capacity for three things of which he never has enough. He wants life – not for the next few minutes, but for always, and with no aging or disease to threaten it. He also wants to grasp truth – not with a forced choice between the truths of mathematics or geography, but he wants all truth. Thirdly, he wants love – not with a time-limit, not mixed with satiety or disillusionment, but love that will be abiding ecstasy.”
Source: Ven. Fulton J. Sheen, Way to Happiness, St. Pauls, 1998.