There is no virtue in penance and fasting which waste the body; they are only fanatical and monkish.
Immanuel KantHere I shall add that the concept of change, and with it the concept of motion, as change of place, is possible only through and in the representation of time. & Motion, for example, presupposes the perception of something movable. But space considered in itself contains nothing movable; consequently motion must be something which is found in space only through experience -in other words, is an empirical datum.
Immanuel KantBut although all our knowledge begins with experience, it does not follow that it arises from experience.
Immanuel Kant