"The color.

"The movement.

"The form.

"The number.

"The duration.

"We have just spoken of the color.

"The movement is personified by a series of gestures that people make or
by a series of changes to which they subject things.

"The form is represented by the different outlines.

"The number by their quantity.

"The duration by their length; one will judge of the length of time it
takes to walk a road by seeing the length of it.

"The act of listening is divided into three degrees.

"First degree, to hear.

"Second degree, to understand.

"Third degree, to reflect.