Answer:
Plato and Platonic Idealism: "Truth lays in an abstract Ideal". We can apply mathematical proofs or logic to locate to the true form of these transcendent truths or ideals but ultimately in his beliefs we can only perceive through our senses of the physical world. So that means that through the physical world we only barely scratch the surfaces of truths that transcends far beyond comprehension because to him the natural world can be dangerously misleading such as a lawyer could condemn the innocent by convincing the jury. Thinking logically rather than objectively through observation- is the road to truth. How the physical world leads us to truth? that part I'm not sure about but I hope this information is useful