Roberto R.

“O vitae Philosophia dux! O virtutum indagatrix expultrixque vitiorum! Unus dies, bene et ex praeceptis tuis actus, peccanti immortalitati est anteponendus.

translation (non-literal):
O philosophy, life’s guide! O searcher of virtues and expeller of vices! Just a single day lived well and according to your lessons is to be preferred to an eternity of errors.

— Cicero, As quoted in Ben Franklin’s Autobiography”
― Benjamin Franklin, The Autobiography of Benjamin Franklin