Symmetry and Balance

"The desire for symmetry, for balance, for rhythm is one of the most inveterate of human instincts." - Edith Wharton and Ogden Codman, Jr, The Decoration of Houses (here)

Symmetry -.

1. the correspondence in size, form, and arrangement of parts on opposite sides of a plane, line, or point

2.the proper or due proportion of the parts of a body or whole to one another with regard to size and form; excellence of proportion

3. beauty based on or characterized by such excellence of proportion

Balance - composition or placement of elements of design, as figures, forms, or colors, in such a manner as to produce an aesthetically pleasing or harmoniously integrated whole

images here, here, and here