In that, Yasunobu claimed that there were two different types of great paintings; one was 'shitsuga' (painting of quality), which was made possible by the talent of a genius, and the other was 'gakuga' (painting of learning), which resulted from learning of classics.
この中で安信は、優れた絵画には、天才が才能にまかせて描く「質画」と古典の学習を重ねた末に得る「学画」の二種類があるとしている。