Philosopher: Did you mean...?

Euclid of Alexandria (lived c. 300 BCE) systematized ancient Greek and Near Eastern mathematics and geometry. He wrote The Elements, the most widely used mathematics and geometry textbook in history. Older books sometimes confuse him with...

Robert Boyle (1627-1691) was an Anglo-Irish chemist, physicist, and experimental philosopher. Boyle was a prolific author, made significant experiments with air pumps, and presented the first litmus test. A founding member of the Royal Society...

Utilitarianism is a philosophy founded by Jeremy Bentham (1748-1832) and then extended by other thinkers, notably John Stuart Mill (1806-1873). Utilitarianism involves the greatest happiness principle, which holds that a law or action is...

Xenophanes of Colophon (l. c. 570 to c. 478 BCE) was a Greek philosopher born 50 miles north of Miletus, a city famed for the birth of philosophy and home to the first Western philosopher, Thales of Miletus (l. c. 585 BCE). He is considered...

Lucius Annaeus Seneca (Seneca the Younger, l. 4 BCE - 65 CE) was a Roman author, playwright, orator, and most importantly a tutor and advisor to the Roman emperor Nero (r. 54-68 CE). Influenced by Stoic philosophy, he wrote several philosophical...

Lucius Verus was Roman emperor from 161 to 169 CE. Lucius Verus was Marcus Aurelius' adopted brother and co-emperor, a man whose time on the throne is overshadowed by the reign of the last of the Five Good Emperors. In the final years of...

Theodoric the Great (l. c. 454-526 CE, r. 493-526 CE, also known as Flavius Theodoricus) was the king of the Ostrogoths who, at the encouragement and direction of the Roman emperor Zeno, invaded Italy, deposed King Odoacer, and ruled over...

Zeno of Elea (l. c.465 BCE) was a Greek philosopher of the Eleatic School and a student of the elder philosopher Parmenides (l.c. 485 BCE) whose work influenced the philosophy of Socrates (l. c. 470/469-399 BCE). Zeno and Parmenides are both...

Lucius Flavius Arrianus, commonly known as Arrian (86 - c. 160 CE) was a Greek historian, philosopher, and statesman from Nicomedia, capital of the Roman province of Bithynia. Arrian is recognized as one of the most renowned authors of the...

Plotinus (c. 204-270) was a Platonic philosopher born in Lycopolis, Egypt. Although the story of his life was written down by his student Porphyry, few biographical details are included because Plotinus rejected the physical world of appearances...