Nancy Duarte is the CEO of Duarte, Inc. She teaches workshops on the art of presenting and is the author of two award-winning books: Slide:ology and Resonate. Bryan A. Garner is a leading authority on writing, grammar, usage, and style. He is the author of many books on writing, including the best-selling reference work Garner’s Modern American Usage. He is also editor in chief of the world’s most frequently cited lawbook, Black’s Law Dictionary. Harvard Business Review is the leading destination for smart management thinking. Through its flagship magazine, 11 international licensed editions, books from Harvard Business Review Press, and digital content and tools published on HBR.org, Harvard Business Review provides professionals around the world with rigorous insights and best practices to lead themselves and their organizations more effectively and to make a positive impact.