Gregory the Great — as excerpted in the Catena Aurea on Luke 24:25-35

“(Hom. 10. in Ev.) By the word which is heard the spirit is kindled, the chill of dulness departs, the mind becomes awakened with heavenly desire. It rejoices to hear heavenly precepts, and every command in which it is instructed, is as it were adding a faggot to the fire.”