JKD as it has survived since—if one views it "refined" as a product, not a process—is what was left at the time of Lee's death. It is the result of the lifelong martial arts development process he went through. Lee stated his concept does not add more and more things on top of each other to form a system, but rather selects the best thereof. The metaphor Lee borrowed from Chan Buddhism was of constantly filling a cup with water, and then emptying it, used for describing Lee's philosophy of "casting off what is useless". He used the sculptor's mentality of beginning with a lump of clay and removing the material which constituted the "unessentials"; the end result was what he considered to be the bare combat essentials, or JKD. The dominant or strongest hand should lead because it would perform a greater percentage of the work. Lee minimized the use of other stances except when circumstances warranted such actions.