I am very much concerned about yourself that you have been injured, by working; I do not know what sort of ugra-karma you were doing, but whatever you do, you must be careful. Your body is dedicated to Krishna, therefore you should not be neglectful about your body. You should always think that your body is no more your body, but it is Krishna's body. Therefore you should take care of it.
Letter to Jayapataka, 6 October, 1968