How does our brain process outside light and what enhances the light and delight of our mind? The place in the brain where outside light is processed is the pineal gland. It is a very important and powerful little part of our brain. The pineal gland has been called by French philosopher René Descartes the “principal seat of the soul” in his book The Passions of the Soul (1649). Nowadays neuroscience and psychology are revealing why it is so important. Connect to your “inner light processor” through our exercise Light up your Brain (link) and connect with other human beings around the world every day through Focus on the Light (link).