Lewes' definition of psychology

Lewes defined psychology as the scientific study of the laws that govern mental phenomena—our thoughts, feelings, and behaviors—by analyzing their underlying causes and patterns. He emphasized understanding the relationship between mental processes and physical activities, viewing psychology as an empirical science that investigates how the mind operates and interacts with the body. Essentially, Lewes saw psychology as a rigorous pursuit of discovering the principles that explain how and why human mental states occur and change, seeking to understand the human mind through careful observation, experimentation, and analysis.