Whether you are a solicitor or a consultant, your credibility is crucial to your success. For the Gorrissen Federspiel law firm, we included a module on credibility as part of a training session attended by selected solicitors ranging from the partner level down to clerks. While firms in knowledge-intensive industries are keenly focused on factual details, their customers are swayed by factors like trust and relationships. This is something that the rhetorical concept of “ethos” from Greek philosophy addresses, and for the Gorrissen Federspiel training session we focused on ways to establish credibility during traditional forms of interaction, such as courtroom presentations and meetings with clients, as well as when making PowerPoint presentations.