What Is the Boundary Between Science and Philosophy?

What is the boundary between science and philosophy, or other expressions of rationality? i think people are profoundly confused by this. I've argued for years in several contexts, about the unity of knowledge. And i feel that you're a kindred spirit here. So how do you differentiate or fail to differentiate science and philosophy? Well, as you've just indicated, i think that science and philosophy both manifestations of reason.