He'd run about 26 miles to tell his fellow Greeks that the Athenian army had defeated the Persians and of course a marathon today commemorates the 26 plus miles the messenger ran.
We're told that he was warned by a wise Athenian statesman that no man, however rich and powerful, could be considered happy until he knew his end. Everything would depend on whether he died happy.
Ariadne. There are several women from Greek mythology who bore the name Ariadne, but the most famous was a princess, the daughter of King Minos who fell in love with the Athenian hero Theseus.
In 1882, Friedrich Nietzsche reimagined a story in which Diogenes went into the Athenian marketplace with a lantern, searching in vain for a single honest person.