Earthquakes have long been regarded as one of the primary causes of the most devastating natural disasters in history, and as such have attracted particular attention throughout the ages. Various theories have been put forward regarding their origin. But what could be the true cause of earthquakes? Gravitational mass redistribution, mechanical stresses arising from the Earth's cooling, electrical discharges, continental drift, seafloor spreading, plate tectonics, or some other physical phenomenon? In this thought-provoking work, the author seeks to answer this compelling question through groundbreaking research, compelling theories, and authoritative publications.