The Elements of the visual notation system are tools used to build
a composition. In the Alphabet, we recognize two classes of composition,
symmetrical and asymmetrical.
A symmetrical composition is balanced, and has an overall equality
of Size, Shape, Line, Line Direction, Texture, Value, and Color.
It is capable of division into equal parts. A symmetrical composition
uses the Elements by repeating them, and is therefore of minimum
contrast. Emotionally, it is apt to be a more passive design,
spatially more static, and esthetically more decorative.
Henri Matisse, The Piano Lesson