A person that much interested in science is going to neglect his social life somewhat but not completely because that isn't healthy either. So one has to work it out according to one's own inclinations how one wants to proportion these things.
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.