Who will say that a man is thankful to his friend for a past kindness, if he nourishes an ill opinion of him for the future?…He is the most thankful man that treasures up the mercies of God in his memory, and can feed his faith with what God hath done for him so as to walk in the strength thereof in present straits
–as cited by Charles Haddon Spurgeon (1834-1892) on Psalm 78 in his Treasury of David