He who knows no hardships will know no hardihood. He who faces no calamity will need no courage. Mysterious though it is the characteristics in human nature which we love best grow in a soil with a strong mixture of troubles.
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.