Internet Encyclopedia of Philosophy
Internet Encyclopedia of Philosophy: Heraclitus
Excellent introduction to Heraclitus' difficult philosophy from the Internet Encyclopedia of Philosophy. Includes biography relating him to other Ionian and Milesian philosophers. Quotes several of his fragments.
Other
Ancient Greek Philosophy: Thales of Miletus
Includes a short summary of the life and work of the Greek philosopher Thales of Miletus. Discusses his life, work in Astronomy and Mathematics, and view of water and pantheism. Also includes a couple of quotations that make reference to...
Internet Encyclopedia of Philosophy
Internet Encyclopedia of Philosophy: Empedocles
Good introduction to his life and thought from the Internet Encyclopedia of Philosophy. Focuses especially on Empedocles' relationship to Pythagoras and his account of Love and Strife.
Internet Encyclopedia of Philosophy
Internet Encyclopedia of Philosophy: Greek Philosophy
Introduction from the Internet Encyclopedia of Philosophy to the main topics and thinkers in the Greek philosophical tradition. Includes links to related articles. Helpful for relating particular philosophers to each other chronologically.