“Thanksgiving is oral, positive, active. It is the giving out of something to God. Thanksgiving comes out into the open. Gratitude is secret, silent, negative, passive, not showing its being till expressed in praise and thanksgiving. Gratitude is felt in the heart. Thanksgiving is the expression of that inward feeling.”E. M. Bounds
Source
E. M. Bounds, The Essentials of Prayer Exact original-source attribution has not been independently verified.