"Few are those who can see with their own eyes and hear with their own hearts."
-Albert Einstein
"To be ignorant of one’s own ignorance is the malady of the ignorant."
-Amos Alcolt
"It is impossible to make someone understand their own ignorance, for it requires knowledge to perceive it; and, therefore, he that can perceive it has it not."
-Jeremy Taylor
"It is difficult to free fools from the chains they revere."
- Voltaire
"To act without clear understanding, to form habits without investigation, to follow a path all one's life without knowing where it really leads; such is the behavior of the multitude."
-Mencius
“To most people, nothing is more troublesome than the effort of thinking.”
-James Bryce
“Common sense is not a common virtue.”
"Education is a progressive discovery of our own ignorance."
- Will Durant
"There's lots of people.... this town wouldn't hold them; who don't know much excepting what's told them."
- Will Carleton
"A weak mind is like a microscope, which magnifies trifling things, but cannot receive great ones."
-Lord Chesterfield
"Young men are apt to think themselves wise enough, as drunken men are apt to think themselves sober enough."
-Lord Chesterfield
"Real knowledge is to know the extent of ones own ignorance."
- Confucius
"The first step to knowledge is to know that we are ignorant."
-Cecil
"Few people think more than two or three times a year; I have made an international reputation for myself by thinking once or twice a week."
- George Bernard Shaw
"Fullness of knowledge always means some understanding of the depth of our ignorance; and that is always conducive to humility and reverence."
- Robert Millikan