An expert knows the subject very well. A model teaches by…

An expert is someone who knows some of the worst mistakes that can be made in his subject and how to avoid them.

— Werner Heisenberg

“An expert is someone who knows more and more about less and less.”

— Nicholas Butler

The expert knows more and more about less and less until he knows everything about nothing.

— Mahatma Gandhi

Many people will tell you that an expert is someone who knows a great deal about the subject. To this I would object that…

— Werner Heisenberg

“An expert is one who knows more and more about less and less.” NICHOLAS MURRAY BUTLER”

— Charles M. Sevilla

An expert is someone who knows a lot about the past.

— Tom Hopkins

An expert is someone who knows more and more about less and less, until eventually he knows everything about nothing.

— Andrew McMahon

An expert knows all the answers - if you ask the right questions.

— Levi Strauss

An expert is one who knows more and more about less and less until he knows absolutely everything about nothing.

— Nicholas Butler

An expert is one who knows more and more about less and less.

— Anonymous

An expert is someone who knows some of the worst mistakes, which can be made, in a very narrow field.

— Niels Bohr

A person who has experienced something is almost always far more expert on it than are the experts.

— Gloria Steinem

“I’m a scientific expert; that means I know nothing about absolutely everything.”

— Arthur C. Clarke

Experts don't know exactly where the boundaries of their expertise are.

— Daniel Kahneman

As actors, you become an expert at starting over.

— Lupita Nyong'o