Charles William Peppler, The Termination -κός, as used by Aristophanes for Comic Effect (1910)
“ With ultimate triumph as an inducement, the higher education became a craze, particularly among the young men of means who flocked to the new teachers: witness the youthful company gathered around the sophists at the house of Callias in Plato's Protagoras, and the eagerness of the high-born Hippocrates to meet Protagoras, as shown by his early morning visit to Socrates whom he aroused from sleep before daylight and begged for an introduction to the great sophist. ”
