I have developed degrees of aesthetic appreciation and they being surface level of meaning, atheistic appreciation and interpretation.
On a Surface Level of meaning we find man with awkward posture, very stiff, very macho.
As an aesthetic artifact we appreciate the fine grandeur of the body resembling ancient Greek Gods, handsome, fierce, quite disturbing for the human eye.
Interpretation can be made culturally and philosophically. The Thinker is an art, defiant one, showing the brilliant triumph of reason, able to cope with any adversity, a superman (Zarathustra) described by Nietzsche, being driven recklessly to celebrate the age of reason and yet being passionate in a poetic way with beauty.