I say, then, that the happiness of the soul consists in the exercise of the affections; not in sensual pleasures, not in activity, not in excitement, not in self esteem, not in the consciousness of power, not in knowledge; in none of these things lies our happiness, but in our affections being elicited, employed, supplied. As hunger and thirst, as taste, sound, and smell, are the channels through which this bodily frame receives pleasure, so the affections are the instruments by which the soul has pleasure. When they are exercised duly, it is happy; when they are undeveloped, restrained, or thwarted, it is not happy. This is our real and true bliss, not to know, or to affect, or to pursue; but to love, to hope, to joy, to admire, to revere, to adore. Our real and true bliss lies in the possession of those objects on which our hearts may rest and be satisfied.
--Blessed John Henry Newman, “The Thought of God, the Stay of the Soul”, Parochial and Plain Sermons, Vol. 5