I once asked a very great Murshid which was best suited for psychic and occult powers, strength or weakness of the body. No doubt there are people who, when they were sick and weak, found themselves able to see things which, being well, they could not see. But this kind of psychic power has no scope for development, because there is no strength. We sometimes think that in order to have psychic powers we should become ethereal, delicate and weak, but physical strength is needed. If it were not so, God would not have manifested Himself as man. If this physical world were not needed it would never have been created. At whatever time of life, a person, whatever his constitution, should spend twenty minutes a day developing his bodily strength. How to develop physical strength is a very extensive subject and it would take a long time to study it.