Theophrastus, (born c. 372 BC, Eresus, Lesbos—died c. 287), Greek Peripatetic philosopher and pupil of Aristotle. He studied at Athens under Aristotle, and when Aristotle was forced to retire in 323 he became the head of the Lyceum, the academy in Athens founded by Aristotle.
Known for his exemplary published books on botany (i.e. “On the history of plants” and “On the Causes of Plants“), the Greek philosopher Theophrastus is often called as the “Father of Botany“.
Theophrastus was one of the few Peripatetics who fully embraced Aristotle’s philosophy in all areas of metaphysics, physics, physiology, zoology, botany, ethics, politics, and history of culture.
Among Theophrastus’ other works is the Physikōn doxai (“Opinions of Natural Philosophers”). As reconstructed by Herman Diels in Doxographi Graeci (1879), it provides a foundation for the history of ancient philosophy.