"I wish I had known that my biggest source of learning would be my field colleagues. ...I believed in textbooks." Dr. Muhammad Musa reflects on 41 years of work in international development. His two biggest lessons are: learn from your frontline staff, and tell stories with impact. Some lessons he learned in the decades are to build a fearless climate--a climate of trust, where staff at all levels can learn from failure, and can take time to reflect. He also notes that moving from a project to a movement--one that changes a system--is the best way to create change. Technical solutions are not the only (or even the best) way to get the job done.