How does paragraph 3 contribute to the authors argument

"as one of our outstanding historical figures once said, ‘when a great democracy is destroyed, it will not be because of enemies from without but rather because of enemies from within.’" (paragraph 7) how does this quote reveal mccarthy’s point of view and advance the purpose of his speech?

Insert comma today we went to the store to the post office and to the park

How do headings organize your information?