John Malcolm Mitchell, 1911 Encyclopædia Britannica, Volume 4… (1911)
“ On the whole it is reasonable to conclude that it was Solon who invented the Boulē to act as a semi-democratic check upon the democracy, whose power he was increasing at the expense of the oligarchs by giving new powers to the people in the Ecclesia and the Dicasteries. Practically nothing is known of the operations of this council until the struggle between Isagoras and Cleisthenes (Herod, v. 72) . Solon’s council had been based on the four Ionic tribes. ”
