李格尔所有有关艺术科学的理论探索均围绕着他著名的“艺术意志”理论来展开:即美术史是具有自然法规约束力的不断进化和发展的过程,不以艺术家个人意志为转移,艺术的本体在于形式,当一种艺术样式向另一种迁移的时候,已经不涉及到艺术本身,那就是艺术意志在起作用。 All Liage’s theoretical exploration of art science revolves around his famous theory of art will: art history is a process of continuous evolution and development that is bound by the laws and regulations of the natural world, and does not shift from the personal will of the artist , The noumenon of art lies in the form. When one kind of artistic style moves to the other, it does not involve the art itself, that is, artistic will is at work.