The thesis statement serves as the foundation of any essay. Feature it prominently in the introduction, as the final sentence. The perspective you chose to take in the introduction drives the thesis statement. Consider your main idea and why it is important. For example, what influence did historical events have on the poem and why are they significant? Alternately, you might choose to answer the question of what the use of personification adds to the poem and why is it significant. To create a strong thesis statement, answer the questions you want to address in one assertive sentence.