There is always, in the fine arts, a physical interface between the artist's esthetic vision and the material result he seeks. The interface may be the application of brush to canvas, chisel to marble, bow to string. . . It may be the control of voice in song or the control of body in dance. It is the mastery of the interface that comprises the artistry; it is what constitutes the 'art' in fine art.
The great characteristic of men of active genius is a sublime self-confidence, springing not from self-conceit, but from an intense identification of the man with his object, which lifts him altogether above the fear of danger and death, which gives to his enterprise a character of insanity to the common eye, and which communicates an almost superhuman audacity to his will.