The statement 'Always make your future bigger than your past.' by Dan Sullivan, linked to a blog about developing a Longevity Mindset, does not constitute public discourse. It is promotional in nature, primarily aimed at directing readers to a specific blog post. The content of the linked blog might touch upon public issues like health and wellness, but the statement itself and the promotional context do not engage substantively with public issues or policies. It serves more as an encouragement or motivational guidance rather than a contribution to civic dialogue.