Nothing is more sad than the death of an illusion.

Arthur Koestler Sad Quote

Creative activity could be described as a type of learning process where teacher and pupil are located in the same individual.

Arthur Koestler Learning Quote

Courage is never to let your actions be influenced by your fears.

Arthur Koestler Courage Quote

The prerequisite of originality is the art of forgetting at the proper moment what we know.

Arthur Koestler Art Quote