ELI5: Explain Like I'm 5

Platonism

Platonism is a way of thinking about life that says that our physical world is different from the world of ideas, which is the perfect world. In the world of ideas, everything is perfect, and it is the source of all true knowledge. In the physical world, things can be changed, and nothing is absolutely perfect. Platonism suggests that by understanding the world of ideas, we can make sense of the physical world and find truth.