Memory is the first of three “cognitive dispositions” which permit the development of the necessary conditions for the actual exercise of prudence, and without which the exercise of prudential judgment is only an illusion. The healthy disposition of memory is bound to assist in the effective exercise of prudence because it gives he who develops it the capacity to recall and reflect upon past experiences in an objective fashion, and without falsification.
 ST II-II, q. 49, a. 1.