Socrates said this quote

“ If the soul is immortal, it demands our care not only for that part of time which we call life, but for all time; and indeed it would seem now that it will be extremely dangerous to neglect it. If death were a release from everything, it would be a boon for the wicked, because by dying they would be released not only from the body but also from their own wickedness together with the soul; but as it is, since the soul is clearly immortal, it can have no escape of security from evil except by becoming as good and wise as it possibly can. For it takes nothing with it to the next world except its education and training... ”