None are so old as those who have outlived enthusiasm.

Forty is the old age of youth, fifty is the youth of old age.

Alas, after a certain age every man is responsible for his face.

Growing old is no more than a bad habit which a busy person has no time to form.

Age is an issue of mind over matter. If you don't mind, it doesn't matter.

Age appears to be best in four things old wood best to burn, old wine to drink, old friends to trust, and old authors to read.

Wrinkles should merely indicate where smiles have been.

Old minds are like old horses you must exercise them if you wish to keep them in working order.

Forty is the old age of youth fifty the youth of old age.

Every man over forty is a scoundrel.