One of these teachers, Fronto, has come down to us, his portrait well etched on history's tablets, because he saved all the letters written him by Marcus Aurelius; and his grandchildren published them in order to show the excellence of true scientific teaching. That old Fronto was a dear old dear, these letters do fully attest. When Marcus went away on a little journey, even to Lorium, he wrote a letter to Fronto telling about the trip--the sheep by the wayside, the dogs that herded them, the shower they saw coming across the Campagna, and incidentally a little freshman philosophy mixed in, for Fronto had cautioned his pupil always to write out a great thought when it came, for fear he would never have another. Marcus was a sprightly letter-writer, and must have been a quick observer, and Fronto's gentle claims that he made the man are worthy of consideration. As a literary exercise the daily theme, prompted by love, can never be improved upon. The way to learn to write is to write. And Pronto, who resorted to many little tricks in order to get his pupil to express himself, was a teacher whose name should be written high. The correspondence-school has many advantages--Fronto purposely sent his pupil away or absented himself, that the carefully formulated or written thought might take the place of the free and easy conversation. In one letter Marcus ends: "The day was perfect but for one thing--you were not here. But then if you were here, I would not now have the pleasure of writing to you, so thus is your philosophy proved: that all good is equalized, and love grows through separation!" This sounds a bit preachy, but is valuable, as it reveals the man to whom it is written: the person to whom we write dictates the message. Fronto's habit of giving a problem to work out was quite as good a teaching plan as anything we have to offer now. Thus: "An ambassador of Rome visiting an outlying province attended a gladiatorial contest. And one of the fighters being indisposed, the ambassador replied to a taunt by putting on a coat of mail and going into the ring to kill the lion. Question, was this action commendable? If so, why, and if not, why not?" The proposition was one that would appeal at once to a young man, and thus did Fronto lead his pupils to think and express. Another teacher that Marcus had was Rusticus, a blunt old farmer turned pedagog, who has added a word to our language. His pupils were called Rusticana, and later plain rustics. That Rusticus developed in Marcus a deal of plain, sturdy commonsense there is no doubt. Rusticus had a way of stripping a subject of its gloss and verbiage--going straight to the vital point of every issue. For the wisdom of Marcus' legal opinions Rusticus deserves more than passing credit.