If you deprive an artist of all he has borrowed from the experience of others the originality left will be but a twentieth part of him.
Originality by itself cannot constitute a remarkable talent.
Wiertz.
LV
I am convinced that to reach the highest degree of perfection as a painter, it is necessary, not only to be acquainted with the ancient statues, but we must be inwardly imbued with a thorough comprehension of them.
Rubens.
LVI
First of all copy drawings by a good master made by his art from nature and not as exercises; then from a relief, keeping by you a drawing done from the same relief; then from a good model, and of this you ought to make a practice.