Morrie says that
"As you grow, you learn more. If you stayed at twenty-two, you'd always be as ignorant as you were at twenty-two. Aging is not just decay...it's growth. It's more than the negative that you're going to die, it's also the positive that you understand you're going to die, and that you live a better life because of it".
To Morrie, aging has as much to do with the spiritual aspect of life as it does the physical; he is more concerned with how a person grows older in wisdom than how his body decays with the years. In his thinking, growing in wisdom is cummulative - the older you get the more wisdom you accumulate. He remembers "what a misery being young can be...(because) the young...have very little understanding about life". Morrie says that "if you've found meaning in your life, you don't want to go back, you want to go forward". From Morrie's viewpoint, life is a spiritual exercise, and is so much better when it can be lived with the understanding that comes with age.
Morrie says that "if you're always battling against getting older, you're always going to be unhappy". He himself "embrace(s) aging", having discovered the ability "to accept who you are and revel in that". From the vantage point of old age, Morrie says that "part of me is every age...I've been through all of them, and I know what it's like...I am every age, up to my own". He cannot be envious of those who are still young, because he carries the memory of being young within himself, and it makes him a better, wiser person ("The Seventh Tuesday - We Talk About the Fear of Aging").