"Anything I cannot thank God for for the sake of Christ, I may not thank God for at all; to do so would be sin. ... We cannot rightly acknowledge the gifts of God unless we acknowledge the Mediator for whose sake alone they are given to us."

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Gratitude goes beyond the 'mine' and 'thine' and claims the truth that all of life is a pure gift. In the past I always thought of gratitude as a spontaneous response to the awareness of gifts received, but now I realize that gratitude can also be lived as a discipline. The discipline of gratitude is the explicit effort to acknowledge that all I am and have is given to me as a gift of love, a gift to be celebrated with joy.

— Henri Nouwen