Euclid, sometimes called Euclid of Alexandria to distinguish him from Euclides of Megara, was a Greek mathematician, often referred to as the "father of geometry". He was active in Alexandria during the reign of Ptolemy I (323–283 BC). His...

Zeno of Citium (The Stoic) was a Hellenistic philosopher from Citium, Cyprus. Zeno was the son of a merchant and a student of Crates of Thebes, the most famous Cynic living at that time in Greece. Zeno was, himself, a merchant until the age...

Chandragupta Maurya was the founder of the Mauryan Empire and the first emperor to unify India into one state. He ruled from 322 BC until his voluntary retirement and abdication in favour of his son Bindusara in 298 BC. Chandragupta Maur...

Epicurus was an ancient Greek philosopher as well as the founder of the school of philosophy called Epicureanism. Only a few fragments and letters of Epicurus's 300 written works remain. Much of what is known about Epicurean philosophy deri...

Pytheas was a Greek merchant, geographer and explorer from the Greek colony Massilia (today Marseille). He made a voyage of exploration to northwestern Europe around 325 BC. He probably travelled around a considerable part of Great Britain,...

Alexander III of Macedon, commonly known as Alexander the Great, was a king of Macedon, a state in the north eastern region of Greece, and by the age of thirty was the creator of one of the largest empires in ancient history, stretching fro...

Seleucus I (Seleucus the Victor) was a Macedonian officer of Alexander the Great and one of the Diadochi. In the Wars of the Diadochi that took place after Alexander's death, Seleucus established the Seleucid dynasty and the Seleucid Empire...

Ptolemy I Soter I, was a Greek Macedonian general under Alexander the Great, who became ruler of Egypt (323–283 BC) and founder of both the Ptolemaic Kingdom and the Ptolemaic Dynasty. In 305/4 BC he demanded the title of pharaoh. His mo...

The last Persian Great King of the Achaemenid dynasty - Darius III Codomannus - is remembered in history as the premier enemy who was beaten by Alexander. Darius had to abandon his commanding battlefield position twice, both at Issus and Ga...

Aristotle was a Greek philosopher and scientist. At eighteen, he joined Plato's Academy in Athens and remained there until the age of thirty-seven (c. 347 BC). His writings cover many subjects – including physics, biology, zoology, metaphys...

Demosthenes, Athenian politician, has always been regarded as the greatest orator of Antiquity, and it is not exaggerated to say that his death marked the end of Greek political speech. Many of his speeches have survived, because in the thi...

Diogenes, also known as Diogenes the Cynic, was a Greek philosopher and one of the founders of Cynic philosophy. He was born in Sinope, an Ionian colony on the Black Sea coast of modern day Turkey, in 412 or 404 BC and died at Corinth in 32...

Plato was a philosopher in Classical Greece and the founder of the Academy in Athens, the first institution of higher learning in the Western world. He is widely considered the most pivotal figure in the development of philosophy, especiall...

Xenophon of Athens was an Athenian-born mercenary, philosopher and historian. At the age of 30, he was elected a commander of the Ten Thousand, a force of Greek mercenaries in the service of Cyrus the Younger. He wrote the Anabasis, which r...

Alcibiades, son of Clinias, from the deme of Scambonidae, was a prominent Athenian statesman, orator, and general. He was the last famous member of his mother's aristocratic family, the Alcmaeonidae, which fell from prominence after the Pel...