Psychoanalysis gives us access to inner workings of the mental apparatus that cannot be studied—literally cannot be seen—from the “objective” point of view. Feelings are a perfect example. Feelings cannot be seen, but they most certainly exist. They are part of nature. And as such they exert effects on the other parts of nature, including those parts that can readily be seen. Hence all the agony of the mind-body problem. How can something immaterial affect something material, unless it is real? The answer is obvious: of course it is real! Reality is not synonymous with visibility. Feelings are real. They exist. They have effects. And for that reason, science ignores them at their peril.