sculpture of verrocchio that exists in florence today is a most charming work in the courtyard of the palazzo vecchio the city hall. the little boy with a dolphin is one of the most famous statues in florence. verrocchio's bronze of david is displayed at the bargello museum, and some believe that leonardo may have been the model for david. that might be true, but leonardo was older than this youthful figure. it is interesting to note david's smile, because some of leonardo's most famous drawings and paintings are remarkable for the manner in which leonardo has rendered their smiles. one is compelled to think of the inner thoughts of these people, which is one of the principal aims of leonardo's art-- to capture what he called "the motion of the mind." in the benois madonna and the portrait of cecilia gallerani, the slight, haunting smile can be seen. and of course in the mona lisa and the john the baptist. the influence of verrocchio on leonardo is very powerful, but as leonardo himself wrote, "the disciple who does not surpass his master fails his master." between 1476 and 1477, leonardo left verroc