Empedocles of Acragas is known as philosopher, healer, excellent orator, miracle-maker, and engineer. This book shows that the careful study of extant fragments of his writings confirms that he was a multi-faceted thinker. In a period when most thinkers were monists, he was a pluralist and the first to introduce the principle of the four elements (roots, as he has named them), as well as the two motive factors (Love and Strife) closely dependent on one another. Scholars, students and specialists will find in this book a guide to new and unexplored paths of Empedocles’ revolutionary thought.