The Constitution of Athens states that all the citizens
Although we know from The Constitution of Athens and Plutarch that
The Constitution of Athens is not an actual constitution, but
Teubneri, 1886), fragments 381-603; hereafter Aristotelis qui ferebantur librorum fragmenta collegit Valentinus Rose; Aristotle's Constitution of Athens and Related Texts, trans.
On this point see Aristotle's Constitution of Athens, 7.
Thucydides is never explicitly mentioned, although it is generally agreed that Aristotle's Constitution of Athens 33.
In short, I think it is essentially correct to have the anniversary of Athenian democracy now, and not in 2039 when our grandchildren may meet to celebrate Ephialtes, or back in 1907 when, in the light of the recently discovered Aristotelian Constitution of Athens, our great-grandfathers might have got together to commemorate an alleged Solonian democracy, with its popular courts manned by jurors, its Council of Four Hundred, and the sanction of impeachment to the Council of the Areopagos for overthrowing the democracy.
Our understanding of Athenian democracy is based on Herodotos, Thucydides, Xenophon, Demosthenes, Aischines, the Aristotelian Constitution of Athens and a large number of inscriptions.
Historians who credit Ephialtes with the introduction of Athenian democracy never do it because of what they read in Plutarch or in the Constitution of Athens.