1. Principle of Design

7. Pure Abstraction: any work of art that has no subject; only elements like composition, balance, harmony, even depth of field and perspective, but these elements are intend to be the only subject. As theorist and writer, Mondrian equated art with the spiritual. He simplified his work, searching to reveal the essence of the spiritual energy in the balance of forces that governs nature and the universe.

8. Inventor of the Mobile, a kind of kinesthetic art (this means that it moves). He liked exploring these ideas: the delicate balance between simple abstract shapes the spaces they occupy the viewers relationship to the artwork since they can never look at it the exact same way twice.