Just remember, once you're over the hill you begin to pick up speed.
Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young.
A comfortable old age is the reward of a well-spent youth. Instead of its bringing sad and melancholy prospects of decay, it would give us hopes of eternal youth in a better world.
Aging is not lost youth but a new stage of opportunity and strength.
Old age is the most unexpected of all the things that can happen to a man.
I will never be an old man. To me, old age is always 15 years older than I am.