There is great treasure there behind our skull and this is true about all of us. This little treasure has great, great powers, and I would say we only have learnt a very, very small part of what it can do.
The very essence of literature is the war between emotion and intellect, between life and death. When literature becomes too intellectual - when it begins to ignore the passions, the emotions - it becomes sterile, silly, and actually without substance.
People often say that humans have always eaten animals, as if this is a justification for continuing the practice. According to this logic, we should not try to prevent people from murdering other people, since this has also been done since the earliest of times.