I'm pretty sure Plato might say that physics gives us a glimpse of the shadows on the cave wall, the measurable patterns of motion, matter, and energy, but it also points us toward something deeper: the unchanging principles, or ‘Forms,’ that underlie the shifting physical world. In that sense, studying physics isn’t just about particles and forces; it’s about recognizing that everything is connected by a hidden order, a kind of mathematical harmony that reflects a greater reality beyond what we see. At least When I read this statement I felt as if the book hinted at something philosophical. but perhaps the book simply means "everything we can see and know" and not in a metaphysical or spiritual emotional "see and know."