Buddha philosophy means that this whole existence of our body or our self is the combination of matter. That is the way of thinking of modern scientists also, that this body is a combination of matter. Under Darwin's theory also, like that, "Organic matter, inorganic matter." They are studying evolution of this matter, organic matter. But actually that is not the fact. The fact is that we, individual soul, that is the real fact. And that individual soul is the seed, and upon that seed, this body has developed.
According to our Vedic understanding, the body develops on the seed. This is very practical. Why we have got different bodies, different types of bodies? Because the condition of the seed is different. The seed is the spirit soul, and by material contact it is covered by finer body—intelligence, mind and ego. And according to the quality of that ego, we develop different kinds of this material gross body.