"Branding is the profound manifestation of the human spirit," says designer and podcaster Debbie Millman. In a historical odyssey that she illustrated herself, Millman traces the evolution of branding, from cave paintings to flags to beer labels and beyond. She explores the power of symbols to unite people, beginning with prehistoric communities who used them to represent beliefs and identify affiliations to modern companies that adopt logos and trademarks to market their products -- and explains how branding reflects the state of humanity.

Debbie Millman: How symbols and brands shape our humanity

How symbols and brands shape our humanity

The Nike swoosh, a design purchased for $35, demonstrates how branding transcends the logo, influenced by marketing genius.

The pink pussyhat, born from grassroots activism, showcases branding's power to mobilize global movements for social change.

From cave paintings to modern logos, symbols have shaped our societies, uniting people under shared beliefs and identities.