I avoid talking before the youth of the age as I would dancing before them: for if one's tongue don't move in the steps of the day and thinks to please by its old graces it is only an object of ridicule.
Wrinkles should merely indicate where smiles have been.
Anyone who stops learning is old whether at twenty or eighty. Anyone who...
Age is an issue of mind over matter. If you don't mind it doesn't matter.