O Man, how long will you remain a rational animal? How long will you fruitlessly try to look into the endless tracts of creation with only your myopic eyes of senses and reason? How long will you remain bound to satisfying the demands of animal man? Shed all constraining fetters; know yourself as something immortal, having limitless powers and faculties. No more this age-old dream of rational animal! Wake up! you are the intuitional child of immortality!
-Paramahansa Yogananda, The Second Coming of Christ, Volume 1
And isn’t sanity really just a one trick pony, anyway? I mean, all you get is one trick: rational thinking. But when you’re good and crazy, the sky’s the limit!