"Insanity: doing the same thing over and over again and expecting different results."
- Albert Einstein

“We do not have to visit a madhouse to find disordered minds; our planet is the mental institution of the universe.”
- Johann Wolfgang von Goethe

“The scientists of today think deeply instead of clearly. One must be sane to think clearly, but one can think deeply and be quite insane.”
― Nikola Tesla

“When dealing with the insane, the best method is to pretend to be sane.”
― Hermann Hesse

"I much prefer the sharpest criticism of a single intelligent man to the thoughtless approval of the masses."
- Johannes Kepler

"I demonstrate by means of philosophy that the earth is round, and is inhabited on all sides; that it is insignificantly small, and is borne through the stars."
- Johannes Kepler