The Poet - Auguste Rodin
Like The Kiss, you've seen Rodin's Thinker so often you barely see it at all anymore. But did you know it was first intended to grace a large relief representing the characters from Dante's Divine Comedy, the figure herein intending to represent The Poet, out of hose head the story and all the characters emerged.
Here it is in that setting. It is Rodin's masterpiece, which is to say it's one of the world's finest artistic creations.