SOUL covers artistic abilities, empathy, luck, and spiritual well-being. If SOUL is low the character should be played as aloof, insensitive, and unlikeable (as in the phrase "This man has no soul"); if high, the character does well in these areas. It is also used for other forms of human interaction, such as fast-talking, acting ("A very soulful performance"), and other arts (including martial arts). If your SOUL is low better not try to con anyone, and forget about learning baritsu or karate.
Normal human characteristics are in the range 1-6, with 1 exceptionally poor, 3 or 4 average, and 6 very good, the top percentile of normal human performance. Player characters may have characteristics of 7 at the discretion of the referee ONLY; this is freakishly good, far better than normal human performance. For example, a gold-medal Olympic athlete might have BODY [7], a Nobel Prize winner MIND [7].
Characteristics cannot normally be improved; under really exceptional circumstances changes might be allowed, but this is a once in a lifetime event. For example, someone discovering the fountain of eternal youth might gain extra BODY, but there should be a price to pay; reduced MIND or SOUL, hideous deformity, and the like. In the unlikely event of an increase in any characteristic, any skills already derived from it (see below) should be recalculated and (if necessary) improved.
Characteristics may sometimes be reduced. For instance, someone crippled after a fall might lose BODY, someone suffering a severe head injury might lose MIND. SOUL might be damaged by insanity or drug abuse. If any characteristic is reduced, recalculate the values of all skills derived from it.