The pineal gland, also known as the pineal gland, is a tiny but extremely significant part of the brain. For centuries, it has captivated the minds of philosophers, mystics, and theologians. French philosopher René Descartes called it the “seat of the soul,” but modern scientific evidence shows that the pineal gland’s real role is far more prosaic and is associated with the regulation of the body’s biological rhythms and the synthesis of melatonin.
These are the conclusions reached by the authors of a study published in the Journal of the History of the Neurosciences.
In the 17th century, Descartes hypothesized that the pineal gland serves as the point of contact between the material body and immaterial consciousness. In his work “The Passions of the Soul,” he described this gland as a sensory processing center and a kind of “command post” for the soul. According to the philosopher, it was through the pineal gland that signals from the senses were integrated. However, advances in neuroscience have completely refuted these ideas: the pineal gland is not involved in spiritual processes and does not possess mystical properties.

Despite this, Descartes’ views had a significant influence on subsequent interpretations of the pineal gland. For example, in the late 19th century, theosophist Helena Blavatsky linked it with the concept of the “third eye” and the Ajna chakra, although no historical evidence for such assertions was found in ancient sources. Later, in the 1920s, anthroposophist Rudolf Steiner proposed that calcification of the pineal gland supposedly affects a person’s ability to perceive “higher spiritual energies.”
Modern research provides a definitive answer: calcium deposition in the pineal gland is a natural, age-related process that has no connection whatsoever with spiritual development or mystical experience. Scientists emphasize that Descartes’s high authority in his time provided the basis for the emergence and dissemination of numerous pseudoscientific and esoteric theories, which continue to exist more than three and a half centuries later.
As a reminder, scientists have discovered a pill that can extend life to 150 years.
To be continued…
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