What qualities makes a work of art great and be considered great through centuries? (It's in the text above: they list 3)

Min 450

1. What qualities makes a work of art great and be considered great through centuries? (It's in the text above: they list 3)
2. In other words, why do artworks like daVinci's Mona Lisa or Jackson Pollock's Autumn Rhythm, still resonate with people no matter how you actually feel about them?
3. Is it because they employed new ideas (innovation) or something like developing new styles (like Pop Art)? This does not have to do with opinion but rather address the truly famous artists and artwork that you've seen throughout this course?