A monk found another smoking while saying the Rosary. “Did the abbot give you permission to do that?” he asked. “Yes,” replied the second monk. The first monk was upset. “Then why did the abbot say no to me when I asked him the same question?” “What did you ask him?” said the first monk. “I asked him if it was all right to smoke while I prayed.” “Oh,” said the second monk, “That explains it. I asked him if it was all right to pray while I smoked.”

Kreeft, Socratic Logic 99

Inest enim homini naturale desiderium cognoscendi causam, cum intuetur effectum; et ex hoc admiratio in hominibus consurgit. Si igitur intellectus rationalis creaturae pertingere non possit ad primam causam rerum, remanebit inane desiderium naturae. Unde simpliciter concedendum est quod beati Dei essentiam videant.

Summa Theologica I, q. 12, a. 1