* Both paragraphs and essays begin with a topic sentence, or a thesis statement, that explains to the reader what the paragraph, or essay, is about. A thesis statement for an essay is longer and more detailed than the topic sentence at the beginning of a paragraph. For example, a thesis statement for an essay might be: "The gravity of marriage becomes more apparent over time; newlyweds imagine a glamorous life ahead and cannot yet imagine the test their love will endure, while couples married for a decade or more are beginning to understand the depth of their promise." A topic sentence for a paragraph might simply be: "A lasting marriage requires many levels of compromise."…