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...

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...

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,...

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...

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...

Pyrrhus of Epirus, king of the Molossians (from ca. 297 BC), Epirus (306-301, 297-272 BC) and Macedon (288-284, 273-272 BC), was one of the strongest opponents of early Rome. Some of his battles, though successful, cost him staggering losse...

Aristarchus of Samos was an ancient Greek astronomer and mathematician who presented the first known heliocentric model that placed the Sun at the center of the known universe with the Earth revolving around it. He was influenced by Phi...

Theocritus, the creator of ancient Greek bucolic poetry, flourished in the 3rd century BC. Little is known of Theocritus beyond what can be inferred from his writings. We must, however, handle these with some caution, since some of the poem...

Archimedes of Syracuse was an Ancient Greek mathematician, physicist, engineer, inventor, and astronomer. Although few details of his life are known, he is regarded as one of the leading scientists in classical antiquity. Generally consider...

Chrysippus of Soli was a Greek Stoic philosopher. He was a pupil of Cleanthes, and his successor, in 230 BC, as third head of the Stoic school. A prolific writer, Chrysippus expanded the fundamental doctrines of Zeno of Citium, the founder...

Philip V was King of Macedon from 221 BC to 179 BC. Philip's reign was principally marked by an unsuccessful struggle with the emerging power of Rome. Philip was attractive and charismatic as a young man. A dashing and courageous warrior, h...

Polybius was a Greek historian of the Hellenistic period noted for his work The Histories, which covered the period of 264–146 BC in detail. The work describes the rise of the Roman Republic to the status of dominance in the ancient Mediter...

Hipparchus was the most important Greek astronomers of his time. He very accurately cataloged over 1,000 stars and invented the mathematical science of trigonometry. Ptolemy was a great admirer of Hipparchus's research and recorded some of...

Posidonius of Apameia or of Rhodes was a Greek Stoic philosopher, politician, astronomer, geographer, historian and teacher native to Apamea, Syria. He was acclaimed as the greatest polymath of his age. None of his vast body of work can be...

Strabo was a Greek historian, geographer and philosopher. Strabo is mostly famous for his 17-volume work Geographica, which presented a descriptive history of people and places from different regions of the world known to his era. Although...