Knowledge

“Real knowledge is to know the extent of one’s ignorance.”
Confucius

“The true sign of intelligence is not knowledge but imagination.”
Albert Einstein

“Knowledge has to be improved, challenged, and increased constantly, or it vanishes.”
Peter Drucker

“If money is your hope for independence you will never have it. The only real security that a man will have in this world is a reserve of knowledge, experience, and ability.”
Henry Ford

“To know that we know what we know, and to know that we do not know what we do not know, that is true knowledge.”
Nicolaus Copernicus