Aristotle of Stagira (384BC-322 BC) is regarded as one of the greatest philosophers of all time. Aristotle philosophized on virtually every subject, including logic, philosophy, ethics, physics, biology, psychology, politics, and rhetoric. His work, along with that of other Greek thinkers, laid the foundation for modern science through their inquiries emphasizing logic, reason, and deduction. His work De Motu Animalium (On the Movement of Animals) geometrically analyzed and described the muscles of animals, and translated rotary motion into translatory motion. Aristotle provided the first technical definition of energeia, a word formed by combining two root forms meaning “at” and “work.” He used this term to describe the operation or activity of anything. The modern term 'energy' was ultimately derived from Aristotle's concept of energeia.
- The Internet Encyclopedia of Philosophy-University of Tennessee. Aristotle: The General Introduction.