An essay conclusion is written with just one intention, which is to summarize what was written earlier in the essay.  In an argumentative essay, it would summarize the arguments. In a descriptive essay, it would remind readers with a brief description. Care should be taken not to deviate from the earlier content. The content would have been researched and elaborated in the essay. In the conclusion, the research is just condensed and the main points highlighted. Students are allowed the freedom to phrase the essay in any way they want. There is no hard and fast rule. The only condition is that no new essay ideas are introduced. This would indicate that the essay is incomplete, and readers would be left wondering if more were to follow.