Assertion: gratitude | /r/HasProperty | categorized as moral virtue
Facets:
value: throughout history
type: TEMPORAL
Source sentences:
text: In pouring through the writings and teachings of Dr. Robert Emmons, who I consider to be the world's leading authority on gratitude (and a podcast guest in the very near future), I've learned that throughout history, gratitude has been categorized as an emotion, an attitude, a moral virtue, a habit, a personality trait, and a coping response.