‘The famous philosopher Descartes described the pineal gland as the ‘principal seat of the soul.’ You’ve probably heard of this gland being called the ‘third eye,’ a mystical chakra point residing right in the middle of your eyebrows. It turns out these ideas aren’t too far off. The small, rice-sized, pinecone-shaped endocrine organ sits alone in the middle of the brain and at the same level as the eyes.’