42+ Seth Godin Quotes Purple Cow. As for 2020 seth is the author of over 18 books some popular ones being the encyclopedia of fictional people, purple cow and free prize inside. Seth godin is a bestselling writer, entrepreneur, and agent of change. Why are we talking about a purple cow and what has it to do with marketing? The concept of the purple cow is to make a product so remarkable that it gets people talking and sells itself. Overhauling the product with dramatic . Read godin's theory and discover how to make your product one of . Seth godin's book, the purple cow, takes you on a journey through the past and present of advertising, pr, and marketing. Seth godin (born july 10, 1960) is an american entrepreneur, author and public speaker. Seth godin is an author from the united states. "the more crowded the marketplace, the busier your customers, the more you need the purple cow.