a group or crowd on a specific occasion and for a specific purpose. They are often intended to be persuasive or inspiring, such as the speeches given by skilled orators like Cicero; charismatic or influential political leaders like Nelson Mandela; or for use in a court of law or parliament. The writer of the speech may be the person intended to deliver it, or it might be prepared by a person hired for the task on behalf of someone else. Such is the case when speechwriters are employed by many senior-level elected officials and executives in both government and private sectors. Interpretive and academic Biographer Biographers write an account of another person's life. Richard Ellmann (1918–1987), for example, was an eminent and award-winning biographer whose work focused on the Irish writers James Joyce, William Butler Yeats, and Oscar Wilde. For the Wilde biography, he won the 1989 Pulitzer Prize for Biography. Critic Critics consider and assess the extent to which a work succeeds in its purpose. The work under consideration may be literary, theatrical, musical, artistic, or architectural. In assessing the success of a work, the critic takes account of why it was done – for example, why a text was written, for whom, in what style, and under what circumstances. After making such an assessment, critics write and publish their evaluation, adding the value of their scholarship and thinking to substantiate any opinion. The theory of criticism is an area of study in itself: a good critic understands and is able to incorporate the theory behind the work they are evaluating into their assessment. Some critics are already writers in another genre. For example, they might be novelists or essayists. Influential and respected writer/critics include the art critic Charles Baudelaire (1821–1867) and the literary critic James Wood (born 1965), both of whom have books published containing collections of their criticism. Some critics are poor writers and produce only superficial or unsubstantiated work. Hence, while anyone can be an uninformed critic, the notable characteristics of a good critic are understanding, insight, and an ability to write well. Editor An editor prepares literary material for publication. The material may be the editor's own original work but more commonly, an editor works with the material of one or more other people. There are different types of editor. Copy editors format text to a particular style and/or correct errors in grammar and spelling