Anybody can become angry - that is easy but to be angry with the right person and to the right degree and at the right time and for the right purpose and in the right way - that is not within everybody's power and is not easy.
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.