James Wood, The Nuttall Encyclopædia — D
“ Demosthenes, the great Athenian orator, born in Athens; had many impediments to overcome to succeed in the profession, but by ingenious methods and indomitable perseverance he subdued them all, and became the first orator not of Greece only, but of all antiquity; a stammer in his speech he overcame by practising with pebbles in his mouth, and a natural diffidence by declaiming on the sea-beach amid the noise of the waves; while he acquired a perfect mastery of the Greek language by binding himself down to copy five times over in succession Thucydides' “History of the Peloponnesian War” ”
