Trust is the foundation for everything we do. But what do we do when it’s broken? In an eye-opening talk, Harvard Business School professor Frances Frei gives a crash course in trust: how to build it, maintain it and rebuild it.

A native of Turkey, Elif Shafak has experienced firsthand the devastation that a loss of diversity can bring — and she knows the revolutionary power of plurality in response to authoritarianism. In this passionate, personal talk, she reminds us that there are no binaries, in politics, emotions and our identities.

Celeste Headlee has worked as a radio host for decades, and she knows the ingredients of a great conversation. Participants will listen to her Ted Talk and engage in interactive discussion and practice exercises to advance the concepts shared in her talk.

Sebastian Junger suggests there’s another major cause of pain for veterans when they come home: the experience of leaving the tribal closeness of the military and returning to an alienating and bitterly divided modern society. Listen and engage in an enlightening conversation about how we can created more tribal work cultures that support military veterans as well as all employees.

We believe we should work hard in order to be happy, but could we be thinking about things backwards? In this fast-moving and very funny talk, psychologist Shawn Achor argues that, actually, happiness inspires us to be more productive.

The subject of race can be very touchy. As finance executive Mellody Hobson says, it’s a “conversational third rail.” But, she says, that’s exactly why we need to start talking about it. In this engaging, persuasive talk, Hobson makes the case that speaking openly about race — and particularly about diversity in hiring — makes for better businesses and a better society.

Organizations are often run according to “the superchicken model,” where the value is placed on star employees who outperform others. And yet, this isn’t what drives the most high-achieving teams. Business leader Margaret Heffernan observes that it is social cohesion — built over every coffee break, every time one team member asks another for help — that leads over time to great results. It’s a radical rethink of what drives us to do our best work, and what it means to be a leader. Because as Heffernan points out: “Companies don’t have ideas. Only people do.”

Four-star general Stanley McChrystal shares what he learned about leadership over his decades in the military. How can you build a sense of shared purpose among people of many ages and skill sets? By listening and learning — and addressing the possibility of failure.