" The compulsive quest for certainty, as we find with Luther, is not the expression of genuine faith but is rooted in the need to conquer the unbearable doubt. Luther's solution is one which we find present in many individuals today, who do not think in theological terms: namely to find certainty by elimination of the isolated individual self, by becoming an instrument in the hands of an overwhelmingly strong power outside of the individual. For Luther this power was God and in unqualified submission he sought certainty. But although he thus succeeded in silencing his doubts to some extent, they never really disappeared; up to his last day he had attacks of doubt which he had to conquer by renewed efforts toward submission. "

― Erich Fromm , Escape from Freedom