"The Italian sculptors of the earlier half of the fifteenth century are more than mere forerunners of the great masters of its close, and often reach perfection within the narrow limits which they chose to impose on their work. Their sculpture shares with the paintings of Botticelli and the churches of Brunelleschi that profound expressiveness, that intimate impress of an indwelling soul, which is the peculiar fascination of the art of Italy in that century."