The document discusses how powerful brands are built on "ideals" or big ideas about how the world could be better. It provides examples of brand ideals for Coke, American Express, Google, and others. An ideal is a conception of something in its perfection. A brand's big idea or ideal should unite employees, stakeholders, partners, and consumers by tapping into cultural tensions while embodying the brand's core values. Brands with strong ideals have higher consideration from consumers and perform well even during economic downturns. Developing an authentic big ideal becomes more important for communicating a brand's values in today's complex communications environment.