The text outlines a method for drawing the face using simple sketches rather than complex mathematical rules. It emphasizes the importance of practice in capturing the profile of facial features such as the eyes, nose, and mouth. The figures A to N illustrate these concepts, showing that drawing relies on changes in perspective rather than strictly defined rules.
The First Part
VII
I have once written the true method to draw according to certain rules, the true art of drawing the face, that is, the eyes, nose, and mouth. I will not expand further with a long discourse or many mathematical rules, because once this is well understood in the spirit, nothing more is needed than a simple sketch, as demonstrated by the figures A B C D E F G H & I K L M N, which are the eyes in profile. All of these are nothing more than changes in view; thus, there is no other rule but practice.
Translation Notes: The term "esbauchment" references a sketch or rough drawing, emphasizing simplicity in understanding the face's profile.