Growing old is inevitable, growing up is optional.
You're only as old as you feel.
And in the end, it's not the years in your life that count. It's the life in your years.Albert Einstein:
People like you and I, though mortal of course like everyone else, do not grow old no matter how long we live...[We] never cease to stand like curious children before the great mystery into which we were born. letter to Otto JuliusburgerHarriet Beecher Stowe:
So much has been said and sung of beautiful young girls, why don't somebody wake up to the beauty of old women?Henry David Thoreau:
None are so old as those who have outlived enthusiasm.