There is no virtue in penance and fasting which waste the body; they are only fanatical and monkish.
Immanuel KantHave the courage to use your own reason- That is the motto of enlightenment. "Foundations of the Metaphysics of Morals" (1785)
Immanuel KantA categorical imperative would be one which represented an action as objectively necessary in itself, without reference to any other purpose.
Immanuel Kant