All that we know is nothing can be known. 

Real education must ultimately be limited to men who insist on knowing—the rest is mere sheep herding.

What harm is there in getting knowledge and learning, were it from a sot, a pot, a fool, a winter mitten, or an old slipper? 

The great difficulty in education is to get experience out of ideas.

The Founding Fathers in their wisdom decided that children were an unnatural strain on parents. So they provided jails called schools, equipped with tortures called an education. School is where you go between when your parents can’t take you and industry can’t take you.