Dutch theoretic painter Piet Mondrian became an important contributor to the modern movement De Stijl, or Neoplasticism. Picasso and Braque greatly influenced Mondrian, attributing to his establishment as a formidable 20th century abstract artist. Mondrian’s take of pure plastic art consisted of fusing primary colors, values, and directions to create an asymmetrical balance that reflected nature’s spirit. He believed that art’s spirit was abstraction in its purest form, so he simplified elements in his own art to reveal the forces he believed governed nature and the universe. He began his professional career as a teacher, exercising his wits while studying art on the side, before revolutionizing abstract art.