还是在第一次世界大战期间写的《创作信经》(Die Schopterischs Kontession)是克利早期在艺术理论上的探索。它于1920年与其他文学家艺术家写的文章编在一起出版。在克利这篇早期的论文中已表露出他基本的创作倾向,他说:“艺术并不描绘可见的东西,而是把不可见的东西创造出来。以前人们描绘事物,描绘那些在地球上可以看到的事物,它们是人们乐意看的或曾经乐意看到的。现在, Or Die Schopterischs Kontession, written during the First World War, was an early exploration of art theory by Klee. It was published in 1920 with articles written by other literary artists. He has shown his basic creative tendencies in his earlier essay: "Art does not depict what is visible, but creates what is invisible.People used to depict things that depict what can be done on Earth Things that people see, or who are happy to see, and now,