Origen

“ Philosophers verily would wish to collect together such hearers of their discourses as exhort men to virtue,—a practice which certain of the Cynics especially have followed, who converse publicly with those whom they happen to meet. Will they maintain, then, that these who do not gather together persons who are considered to have been educated, but who invite and assemble hearers from the public street, resemble those who in the market-places perform the most disreputable tricks, and gather crowds around them? ”