When you're CEO you have to have two conditions: first shareholders need to trust you and want you to head your company. The second is that you need to feel the motivation to do the job. So as long as both are reunited you continue to do the job.
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.