Full Idea
Wisdom implies no more knowledge and understanding than anyone of normal capacity can and should acquire in the course of an ordinary life.
Gist of Idea
Wisdom only implies the knowledge achievable in any normal lifetime
Source
Philippa Foot (Natural Goodness [2001], 5)
Book Reference
Foot,Philippa: 'Natural Goodness' [OUP 2003], p.72
A Reaction
Have philosophers stopped talking about wisdom precisely because you now need three university degrees to be considered even remotely good at phillosophy? Hence wisdom is an inferior attainment, because Foot is right.