Cicero, De finibus 3.15
“For, just as people who are drowning in water are no more capable of breathing if they are far from its surface than if they are just about to break free, or if they are already clinging to the bottom, and just as a puppy who is almost ready to open his eyes can see no more than one who was just born, so too a person who has made some progress in the pursuit of virtue is in no less misery than one who has made no process at all.”
Ut enim qui demersi sunt in aqua nihilo magis respirare possunt si non longe absunt a summo, ut iam iamque possint emergere, quam si etiam tum essent in profundo, nec catulus ille qui iam appropinquat ut videat plus cernit quam is qui modo est natus, item qui processit aliquantum ad virtutis habitum nihilo minus in miseria est quam ille qui nihil processit.
