Some aspects of your brand will be defined by what customers tell you; others, by what you tell them. In their stories of how they scaled Warby Parker from scrappy e-commerce site to comprehensive eyewear and eye care juggernaut, co-founder and co-CEOs Neil Blumenthal and Dave Gilboa give a master class in how to articulate crystal-clear brand values while also building and iterating based on fast customer feedback. Their lesson? Branding isn’t static. It’s a conversation.