Stretched mind – Oliver Wendell Holmes, Sr

“A mind once stretched by a new idea never regains it original dimension.”

– Oliver Wendell Holmes, Sr

Open minds – James Dewar

“Books and minds only work when they’re open.”
 
― James Dewar
 

Mind or heart – Sigmund Freud

In the small matters trust the mind, in the large ones the heart.
 
– Sigmund Schlomo Freud