I really have limited patience with willful stupidity.
All the education in the world does not create intelligence, it just means you have taken more classes.
My personal definition is based more on the ability to think for yourself and look at all sides of an issue, Not just repeating what others have said without any thought at all.
I have found that I can often have a more intelligent conversation with my 14 y/o daughter than with many adults I am acquainted with. :( I find that so sad for them.