When you make your assertion in your thesis, it should be clear and direct. You want your audience to have no doubt about your point. Of course, how assertive you are in your thesis and the content you choose to include depends upon the type of argumentative essay you are writing. For example, in a Classical or Aristotelian argument (explained in pages that follow), your thesis statement should clearly present your side of the issue. In a Rogerian argument (explained in pages that follow), your thesis should bring both sides of the issue together.