It's easy to grow old if you haven't grown up

Growing old is mandatory; growing up is optional.

I'm growing fonder of my staff;
I'm growing dimmer in my eyes;
I'm growing fainter in my laugh;
I'm growing deeper in my sighs;
I'm growing careless of my dress;
I'm growing frugal of my gold;
I'm growing wise; I'm growing--yes,--
I'm growing old.

To remain young while growing old is the highest blessing

The trick is growing up without growing old.

Grow old along with me! The best is yet to be, the last of life, for which the first was made. Our times are in his hand who saith, 'A whole I planned, youth shows but half; Trust God: See all, nor be afraid!