"Old age sure ain't for sissies"

pre-dates Bette Davis.
I'm sure that Henry Ford was not the first
(by a few thousand years) to declare
that The greatest thing in life
is to keep your mind young
– maybe a greater thing even than becoming
a greedy production-line millionaire.
When and where the mind goes, you go, too.
There may or may not
be lots of time to sit and stare.