Microsoft founder Bill Gates viewed Jeffrey Epstein as an enigmatic figure with inexplicable wealth but met with him over a dozen times in a bid to collect sweeping donations for global health, according to his testimony to Congress.

Gates testified on his relationship with Epstein on June 10 before the House Oversight and Government Reform Committee. A transcript of the Microsoft founder’s interview was released Tuesday, offering a rare glimpse into what he saw of the now-deceased New York financier’s identity, interests, and connections to powerful figures.