Diogenes: Did you mean...?

Xenophon of Athens (l. 430 to c. 354 BCE) was a contemporary of Plato and a fellow student of Socrates. He is best known for his Anabasis (The March Up Country) detailing the retreat of the Ten Thousand Greek mercenaries after the defeat...

L. Mestrius Plutarchus, better known simply as Plutarch, was a Greek writer and philosopher who lived between c. 45-50 CE and c. 120-125 CE. A prodigious and hugely influential writer, he is now most famous for his biographical works in his...

Archelaus of Athens (l. c. 5th century BCE) was a Pre-Socratic philosopher in ancient Greece who claimed the first cause of existence was the opposition of cold and heat which caused the separation of the universal essence to produce a plurality...

Constantine X Doukas was the ruler of the Byzantine Empire from 1059 to 1067 CE. During his reign, the Byzantine Empire was attacked by emerging enemies on all sides, including the Normans in Italy and the Seljuk Turks in Armenia and Anatolia...

Plato (l. c. 424/423 to 348/347 BCE), the Greek philosopher whose works have significantly shaped Western thought and religion, is said to have initially been a poet and playwright and, even if the primary source of this claim (the often...

The word philosophy comes from the Greek philo (love) and sophia (wisdom) and so is literally defined as “the love of wisdom”. More broadly understood, it is the study of the most basic and profound matters of human existence. Philosophical...

Pythagoras (l.c. 571 to c. 497 BCE) was a Greek philosopher whose teachings emphasized the immortality and transmigration of the soul (reincarnation), virtuous, humane behavior toward all living things, and the concept of "number" as truth...

Aristarchus of Samos (l. c. 310 - c. 230 BCE) was a Greek astronomer who first proposed a heliocentric model of the universe in which the sun, not the earth, was at the center. Although his theory was noted by other thinkers of his time...

Empedocles (l. c. 484-424 BCE) was a Greek philosopher and mystic whose work harmonized the philosophies of Parmenides (l. c. 485 BCE), Heraclitus (l. c. 500 BCE), and Pythagoras (l. c. 571 to c. 497 BCE) in presenting a unified vision of...

Pyrrho of Elis (l. c. 360 to c. 270 BCE) was a Greek skeptic philosopher credited with founding the school of Pyrrhonism which taught that one must resist making judgments or stating conclusions because sense perception did not correlate...