Possible Clues:

• Aristotle's subject
• It may feature repeating arguments once or twice - or thrice, perhaps
• He goes to right in endless full-toned speech
• Such would be one's skill, in a manner of speaking
• 'Skill, in a manner of speaking (8)'
• The man to be brought in by bishop, one about to give empty talk
• Insincere language
• The art of using words impressively
• Man on hill taken in by interminable full-toned speech
• Torchier kind of colourful speech