To be sensual, I think, is to respect and rejoice in the force of life, of life itself, and to be present in all that one does, from the effort of loving to the making of bread.
What gets me upset about with the newer players is their lack of intensity. They tend to go through the motions a little bit. They don't understand that you've got to practice the way you play.
In Judaism, there are 613 biblical commandments, and the Talmud says that the chief commandment of all is study.