The wise man does not expose himself needlessly to danger since there are few things for which he cares sufficiently but he is willing in great crises to give even his life - knowing that under certain conditions it is not worthwhile to live.
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.