The thanksgiving we offer during Mass must be extended. Our lives are meant to take on the character of the thanksgiving of the liturgy. God wants us to give thanks ultimately for our good, because he knows it will help us become what we are meant to be. Only in thanksgiving are we made whole are we wholly saved. Leo the Great: “For not to give Him thanks in all things, what else is it but to blame Him in some degree. Man’s folly too often dares to murmur against his Creator, not only in time of want, but also in time of plenty, so that, when something is not supplied, he complains, and when certain things are in abundance he is ungrateful