A good essay conclusion recaps the points made earlier, but states them using different words. Add a new facet to give the reader a lasting impression of the essay that preceded the conclusion. Keep the conclusion brief, avoiding unnecessary filler words and unrelated tangents to the main purpose of the essay.
The conclusion of an essay serves two purposes: it summarizes the information and opinions expressed in the preceding essay and it engages the reader with a thought-provoking addition. Merely recounting the points covered earlier in the essay removes the value of the conclusion. Instead of simply regurgitating earlier thoughts, use the conclusion to re-frame the argument using the same information from a fresh perspective.
Do not reiterate the same phrasing, but come at the information and opinions with new words to help re-engage the reader's interest. Some types of engaging additions include a quotation related to the topic of the essay, a statement of necessary action, a twist to the argument presented or an examination of the consequences of action. This added facet brings the reader's attention to the forefront again, making the essay much more memorable.
Keeping the conclusion as short as possible increases the likelihood that the piece will have a far greater impact on readers.