"I must warn you against a too close study of art to the exclusion of nature and the suppression of original thought.... Art rules should be a guide only to the study of nature, and not a set of fetters to confine the ideas or to depress the faculty of original interpretation in the artist, whether he be painter or photographer.... The object (of rules) is to train his mind so that he may select with ease, and, when he does select, know why one aspect of a subject is better than another."
/середина 19ого века/