Form

The space locus of a point is not a space perceived by the senses, but a space understood by the intellect. So a point is incorporeal, and the beginning of lines; a line is incorporeal and the beginning of surfaces; a surface is incorporeal and the beginning of solidity, and solidity is the perfection of matter. Matter, therefore, is really a combination of incorporeal qualities. It is form which constitutes and contains all material bodies, and form is incorporeal.

Johannes Scotus Herigena