"The essence of happiness consists in an act of the intellect.” (Thomas Aquinas, Summa Theologica) ... What is implicit in this sentence? This is implicit: the fulfillment of existence takes place in the manner in which we become aware of reality; the whole energy of our being is ultimately directed toward attainment of insight. The perfectly happy person, the one whose thirst has been finally quenched, who has attained beatitude-this person is the one who sees. The happiness, the quenching, the perfection, consists in this seeing.