Bunch together a group of people deliberately chosen for strong religious feelings, and you have a practical guarantee of dark morbidities expressed in crime, perversion, and insanity.
H. P. Lovecraft
For me, insanity is super sanity. The normal is psychotic. Normal means lack of imagination, lack of creativity.
Human beings have speculated about the relationship between inspiration and insanity for centuries.
I am told that the clinical definition of insanity is the tendency to do the same thing over and over again and expect different results.
Stephen F. Lynch
In individuals, insanity is rare; but in groups, parties, nations and epochs, it is the rule.
Love: A temporary insanity curable by marriage.
The distance between insanity and genius is measured only by success.
I guess the definition of a lunatic is a man surrounded by them.
My Father had a profound influence on me. He was a lunatic.
What frightens us most in a madman is his sane conversation.