Intelligence, broadly defined as the ability to abstract, reason, comprehend, and solve adaptive problems, has been a central topic across disciplines. From Plotinus’ view of intelligence as a divine light illuminating the soul to Vernon Lee’s depiction of its flexible, discursive character, authors have examined its varied roles.
Bertrand Russell focused on its mental patterns, while others questioned its quantifiability and scope. The concept remains a subject of debate, spanning philosophy, psychology, and biology, yet universally acknowledged as a fundamental aspect of human and non-human cognition.