"First degree, to see.
"Second degree, to look.
"Third degree, to observe.
"If we see a material, its color strikes us first and we say: I have seen a red or yellow material, and this will be all.
"Applying ourselves more closely, we look at it and we define the peculiarities of the color. We say: it is bright red or dark red.
"In observing it we determine to what use it is destined.
"The eye is attracted by:
"The color.
"The movement.
"The form.