It’s a simple lesson but important. The subject of a work of art is not the art. The art occurs in the head of the witness. Or perhaps in the head of the artist in the moment before execution but you don’t really get to know what that experience was a an observer. So really, an opinion about art is an opinion about yourself.
Triangles, if they could, would make triangle-ness a quality of God. I wouldn’t trust anybody’s judgment on perfection and that goes double for myself. I go through life looking for the things that reflect truth without any real faith in my ability to recognize them.