Biography (Internet Encyclopedia of Philosophy)
Biography (Stanford Encyclopedia of Philosophy)
Biography (Internet Encyclopedia of Philosophy)
Biography (Stanford Encyclopedia of Philosophy)
Biography (Stanford Encyclopedia of Philosophy)
Biography (Internet Encyclopedia of Philosophy)
Thales: https://commons.wikimedia.org/wiki/File:Thales_1825_at_Alex._Onasis_Foundation.jpg
Heraclitus: http://tr1besman.blogspot.com/2012/03/heraclitus-of-ephesus-impermanence.html
Empedocles: By D. Cunego, 1785, after Raphael. Public Domain. Wikimedia Commons
Democritus: https://commons.wikimedia.org/wiki/File:Democritus2.jpg
Biography (Internet Encyclopedia of Philosophy)
Biography (Stanford Encyclopedia of Philosophy)
Biography (Internet Encyclopedia of Philosophy)
Biography (Stanford Encyclopedia of Philosophy)
Pythagoras: Public domain. Source
Parmenides: http://www.philosophybasics.com/philosophers_parmenides.html
Protagoras: https://commons.wikimedia.org/wiki/File:Euripides_Pio-Clementino_Inv302.jpg
Diogenes: Detail from the School of Athens by Raphael. Public domain. Wikimedia Commons