“What occasions the greater part of the world's quarrels? Simply this: Two minds meet and do not understand each other in time enough to prevent any shock of surprise at the conduct of either party”

“An extensive knowledge is needful to thinking people- it takes away the heat and fever; and helps, by widening speculation, to ease the burden of the mystery”

“Philosophy will clip an angel's wings”

“The only means of strengthening one's intellect is to make up one's mind about nothing , to let the mind be a thoroughfare for all thoughts, not a select party”

“And when he is out of sight, quickly also is he out of mind.”

“Psychoanalysis is that mental illness for which it regards itself as therapy”