For the middle age preaching is the characteristic form of oratory. Political oratory being in abeyance, legal oratory having little scope, preaching practically monopolizes the third field distinguished by Aristotle, occasional oratory, the oratory of here and now. Teaching, clearly of course a sermon function, sometimes becomes the main object; but even so it is not incompatible with other oratorical use of the occasion. Indeed, a sermon hardly succeeds as teaching except through the typical means of occasional oratory. For a sermon is different from a lesson, and even more different from an essay. As a form of oral composition it has opportunities and methods distinct from those of the bar or the senate. Occasional oratory, always beset by temptations toward sophistic,[3] has always opened on the other hand the highest ranges. In preaching, the safeguard against sophistic is in the distinctive use of the occasion to move men to action. Always emotional, occasional oratory becomes in preaching a distinct form of persuasion. Relying less than political oratory on argument, reasoning less and pleading more, it is even more urgent toward a goal. This character, achievement alike and misuse, is vivid in the medieval preaching of the friars. Medieval preaching is occasional oratory not only in the ancient application to special solemnity, but more significantly in using the familiar recurrences of the Church year. The whole western world kept not only Christmas, but Candlemas, Michaelmas, and the rest. Nothing is more characteristic than the focus of popular emotion upon Corpus Christi. The calendar of feasts and fasts was the actual calendar. A medieval auditory had a great common fund of conscious and subconscious associations. The surrounding symbolism of stone and glass was familiar from land to land. The pulpit was beside the altar. The regular sermon on a Sunday or a feast was at Mass after the gospel, which furnished its text.[4] The atmosphere of prayer was intensified by specific petition preceding and following. “Let us therefore ask our Lord to give me good words for you” ended the exordium, or “Pray that we may be illuminated,” or “Pray the Lord, therefore, that by the power of spiritual teaching to-day your hearts may be uplifted”;[5] and the congregation united in _Pater_ and _Ave_. So the sermon ended with prayer, and was immediately followed by common intercessions. Though some of these conditions are constant throughout the history of Christendom, never before or since have they combined at once so amply and so widely to constitute the conditions of preaching. In this special sense medieval preaching was the oratory of occasion. At no other time has oratory had at command so large and constant a fund of common emotional associations. A. VERNACULAR TO THE PEOPLE, LATIN TO THE CLERGY