Philosophy
The Relationship Between Mind and Body in Philosophy
Quick fact
Descartes argued that the mind and body are completely different kinds of substances, yet he believed they interacted in the small pineal gland at the center of the brain — one of the first 'scientific' attempts to explain this mysterious connection.
Why this is interesting
You stub your toe and feel a sharp, throbbing pain — but that pain itself is not made of flesh, blood, or neurons. How can a physical body produce something as immaterial as a feeling?