The Four Unthinkables

56. The Four Unthinkables
Monks, there are these four unthinkables,120 not to be pondered upon; which if pondered upon, would lead one to insanity and distress. What are the four? The range of a Buddha,121 O monk, is an unthinkable, not to be pondered upon; which, if pondered upon, would lead one to insanity and distress. The range of the meditative absorptions … the results of Kamma … speculations about the world122 are unthinkables, not to be pondered upon, which if pondered upon, would lead to insanity and distress. (4:77)
Anguttara Nikaya 4.77