In times of uncertainty, leaders have a responsibility to inspire hope. Sharing hard-won wisdom, business leader Ken Chenault talks about what it takes to enact positive, enduring change -- and why it's more important than ever to invest in responsible innovation that uplifts people and centers equality and fairness. A quick favor! We love making TED Business, and we want to make it better. So if you have a few minutes, share your thoughts at surveynerds.com/ted