Origins on Samos
Tradition places his birth on Samos; the exact date is uncertain.
Pythagorean traditions · c. 570–495 BCE
Pythagoras
Seek an ordered, shared life.
Samos · Croton · southern Italy
Biography
The thread of a life.
Pythagoras, from Samos and associated with Croton, stands at the origin of traditions combining ways of life, reflection on the soul and mathematical inquiry. No authenticated writing by him survives: his thought must be distinguished from later Pythagorean doctrines and legends.
Departure for Italy
He settled at Croton, a Greek city in southern Italy, probably in the second half of the sixth century.
A community
Followers combined teaching, ways of life and shared rules; details of its organization remain debated.
Conflict and later life
Accounts describe opposition and movement; place and date of death are uncertain.
Early testimonies
Classical authors mention Pythagoreans and traditions concerning the soul.
Late lives
Diogenes, Porphyry and Iamblichus composed portraits centuries after him.
Understanding a life in depth
01From Samos to Croton
Pythagoras was probably born on Samos in the sixth century BCE; exact dates reported by late authors remain conjectural. He left the island and settled at Croton, a Greek city in southern Italy, probably in the second half of the century. Later accounts attribute many journeys and encounters with Egyptian or eastern sages to him. Their precision varies and does not permit a secure reconstruction of each stage. The move to Croton, however, is an early and widely shared framework of the tradition.
02A group, practices and conflicts
At Croton, tradition associates his name with a group of followers whose shared life and prescriptions impressed ancient writers. Diet, purification, silence and self-examination appear in sources of different dates; attributing them all directly to the founder would be unsafe. The group’s relationship to local institutions and elites is difficult to determine. Accounts describe violent opposition to Pythagoreans and movement to other cities. The date, circumstances and even place of Pythagoras’ death are not securely established.
03Soul, numbers and the attribution of discoveries
Early testimonies associate Pythagoras with the idea that a soul passes between living beings. Inquiry into numbers, ratios and harmony became central to later Pythagorean traditions. Yet school, successors and individual contributions must be distinguished: no authenticated text allows a written proof of the theorem now bearing his name to be assigned to him with certainty. Historians examine the evidence without erasing the mathematical tradition’s importance or turning a late attribution into an established fact.
04Ancient lives and the image of a sage
Classical authors testify to Pythagorean traditions; much later, Diogenes Laertius, Porphyry and Iamblichus wrote biographies. These narratives combine earlier materials, marvelous anecdotes and their authors’ philosophical concerns. The Golden Verses witness transmitted moral Pythagoreanism without being an authenticated book by the founder. This legacy influenced philosophy, mathematics and European culture; understanding it requires separating the group’s history, the figure’s reception and what surviving evidence actually permits us to know.
Classical authors testify to Pythagorean traditions; much later, Diogenes Laertius, Porphyry and Iamblichus wrote biographies. These narratives combine earlier materials, marvelous anecdotes and their authors’ philosophical concerns. The Golden Verses witness transmitted moral Pythagoreanism without being an authenticated book by the founder. This legacy influenced philosophy, mathematics and European culture; understanding it requires separating the group’s history, the figure’s reception and what surviving evidence actually permits us to know.
Sources & reference points