John Ruskin,
The Elements of Drawing, in Three Letters to Beginners
“ The noble draughtsman draws a leaf, and stops, and says calmly,—That leaf is of such and such a character; I will give him a friend who will entirely suit him: then he considers what his friend ought to be, and having determined, he draws his friend. This process may be as quick as lightning when the master is great—one of the sons of the giants; or it may be slow and timid: but the process is always gone through; no touch or form is ever added to another by a good painter without a mental determination and affirmation. ”
