Vedanā Within This Very Body

“Vedanāsamosaraṇā sabbe dhammā.”
Whatever arises in the mind is accompanied by sensations

By experience the meditator realizes that from the contact of eyes and visible form, eye consciousness arises—the mental cognition of the fact that contact has occurred. The meditator also realizes that the contact produces a vibration, a sensation that spreads throughout the body, just as striking a bronze vessel at one point will cause the entire vessel to vibrate. Once the contact has been cognized, the process of perception occurs: the visible form is recognized as, for example, a man or a woman, black or white, beautiful or ugly. Not only is it identified, but it is also evaluated as good or bad, positive or negative, welcome or unwelcome contact. And according to the evaluation given to the object, the vibration that arose at the moment of contact now takes on a colouration. If the object is evaluated as good, the sensation is felt as pleasant, and if it is evaluated as bad, the sensation is unpleasant. Finally, if the sensation is experienced as pleasant, the mind reacts with craving, and if it is unpleasant, the mind reacts with aversion. Thus, the meditator clearly understands how consciousness, perception, sensation, and reaction—the four segments of the mind—actually function.
Craving intensifies pleasant sensation, and pleasant sensation intensifies craving. Aversion strengthens unpleasant sensation, and unpleasant sensation reinforces aversion. One who meditates properly will understand how from the base of bodily sensations starts a vicious cycle that continues turning with gathering momentum. This is the wheel Of becoming, of misery. The same process follows when contact occurs between the ear and sound, nose and odour, tongue and taste, body and tangible object, mind and thought. In this way the wheel of becoming continues rotating, impelled by craving and aversion.
By observing this process objectively without any preconceptions, a meditator who practises ardently attains freedom from craving and aversion, and stops the turning of the wheel of becoming.

Na vedanaṃ vedayati sapañño, sukhampi dukkhampi bahussuto’pi.
ayañca dhīrassa puthujjanenamahā viseso kusalassa hoti.
A person with wisdom is not affected by sensation,either pleasant or unpleasant, being well-trained. Between the sage and the worldling, this is the great difference in skill.
Be happy!