Bob the Cat
Logos (Greek for 'word') refers to the internal consistency of the message--the clarity of the claim, the logic of its reasons, and the effectiveness of its supporting evidence. The impact of logos on an audience is sometimes called the argument's logical appeal.
Ethos (Greek for 'character') refers to the trustworthiness or credibility of the writer or speaker. Ethos is often conveyed through tone and style of the message and through the way the writer or speaker refers to differing views. It can also be affected by the writer's reputation as it exists independently from the message--his or her expertise in the field, his or her previous record or integrity, and so forth. The impact of ethos is often called the argument's 'ethical appeal' or the 'appeal from credibility.'
[P]athos (Greek for 'suffering' or 'experience') is often associated with emotional appeal. But a better equivalent might be 'appeal to the audience's sympathies and imagination.' An appeal to pathos causes an audience not just to respond emotionally but to identify with the writer's point of view--to feel what the writer feels. In this sense, pathos evokes a meaning implicit in the verb 'to suffer'--to feel pain imaginatively.... Perhaps the most common way of conveying a pathetic appeal is through narrative or story, which can turn the abstractions of logic into something palpable and present. The values, beliefs, and understandings of the writer are implicit in the story and conveyed imaginatively to the reader. Pathos thus refers to both the emotional and the imaginative impact of the message on an audience, the power with which the writer's message moves the audience to decision or action.
[The above text drawn verbatim from Ramage, John D. and John C. Bean. Writing Arguments. 4th Edition. Needham Heights, MA: Allyn & Bacon, 1998, 81-82.] http://www.u.arizona.edu/ic/polis/courses021/ENGL_102-78/EthosPathosLogos
Ethos (Greek for 'character') refers to the trustworthiness or credibility of the writer or speaker. Ethos is often conveyed through tone and style of the message and through the way the writer or speaker refers to differing views. It can also be affected by the writer's reputation as it exists independently from the message--his or her expertise in the field, his or her previous record or integrity, and so forth. The impact of ethos is often called the argument's 'ethical appeal' or the 'appeal from credibility.'
[P]athos (Greek for 'suffering' or 'experience') is often associated with emotional appeal. But a better equivalent might be 'appeal to the audience's sympathies and imagination.' An appeal to pathos causes an audience not just to respond emotionally but to identify with the writer's point of view--to feel what the writer feels. In this sense, pathos evokes a meaning implicit in the verb 'to suffer'--to feel pain imaginatively.... Perhaps the most common way of conveying a pathetic appeal is through narrative or story, which can turn the abstractions of logic into something palpable and present. The values, beliefs, and understandings of the writer are implicit in the story and conveyed imaginatively to the reader. Pathos thus refers to both the emotional and the imaginative impact of the message on an audience, the power with which the writer's message moves the audience to decision or action.
[The above text drawn verbatim from Ramage, John D. and John C. Bean. Writing Arguments. 4th Edition. Needham Heights, MA: Allyn & Bacon, 1998, 81-82.] http://www.u.arizona.edu/ic/polis/courses021/ENGL_102-78/EthosPathosLogos