Thanks Thparky, you're right, that's exactly what my friend said. But my response was, but you're measuring effects of feelings, you can't put anger or love into a glass, you can't hold feelings in your hand or see them with your eye but they're still real. How about wind? You can only measure its effects and feel its presence, I'm not sure it can be touched per say. I daresay maybe God is similar, you can see the effects of a higher power (like creation) some can feel His presence but you will never be able to touch God and use a measuring tape on Him to prove He exists. Doesn't mean He's not real. :)