Abstractionism developed alongside Expressionism in the early 20th century. It emphasized logical and rational concepts like space, time, and relativity over emotional expression. Artists abstracted scenes into geometric shapes, patterns, and colors. Cubism derived from cubes and depicted subjects from multiple perspectives by analyzing and reassembling geometric forms. Futurism celebrated the modern industrial world through mechanized, high-speed depictions of machines. Piet Mondrian's nonobjective works used only primary colors and black and white lines and shapes without recognizable objects.