He insists that the art should bear metaphysical values and its role consists in singing God or serving for religion theology; thereby he establishes the comprehends of the Western Medieval on artistic status and function.

• 强调艺术应该具有形而上的价值,其使命在于歌颂上帝和为宗教神学服务,从而为西方中世纪美学对艺术的地位和作用的理解奠定了基础。