A. How to Write an Introduction. The introduction of a persuasive essay or paper must be substantial. Having finished it, the reader ought to have a very clear idea of the author's purpose in writing. To wit, after reading the introduction, I tend to stop and ask myself where I think the rest of the paper is headed, what the individual paragraphs in its body will address and what the general nature of the conclusion will be. If I'm right, it's because the introduction has laid out in clear and detailed fashion the theme and the general facts which the author will use to support it.
How many facts do you need to support each claim that you make in a persuasive essay? Good question. To some extent, the amount of evidence you need depends on the claim you are trying to support. However, I think it's a good idea to present at least three facts to support each claim. One fact is almost never enough, and it's difficult to build a strong argument with only two facts. After all, I might be able to take one or even two statements that Thoreau makes and argue for all kinds of different meanings, ignoring the possibility that these meanings may not be suggested anywhere else in all of Thoreau's writings. Would you like someone drawing conclusions about beliefs you might have based upon only one statement you made at some point in your life?
Especially useful in a persuasive or argumentative essay, in this type of conclusion the writer makes a proposal and/or asks the readers to do something, calling them to action. It is frequently seen in sermons and political speeches.