David Vélez is a founder of the world’s biggest digital bank: Nubank in Brazil. Vélez tells Professor Ranjay Gulati that he started his remarkable business career as a boy – and with an unusual investment. Vélez describes how having a deep purpose helped his team defy the critics and build Nubank from scratch. Nubank’s core mission led it to outperform the competition. And deep purpose is prompting Vélez, a multi-billionaire, to give away his wealth in his lifetime.