Among the revelations in former CNN chairman Walter Isaacson‘s new biography of Steve Jobs, was that Jobs met his biological father Abdulfattah “John” Jandali many years ago. But at the time, Jobs didn’t know Jandali was his father. And the father had no idea Jobs was his son.

Isaacson tells the story to Steve Kroft for a “60 Minutes” story airing tomorrow, ahead of the book’s release Monday.

Jobs was already well-known for creating Apple when he met Jandali. Jobs had dined at a popular Silicon Valley Mediterranean restaurant “once or twice” that Jandali owned. “Everybody used to come there,” Jandali told Jobs’ sister, the novelist Mona Simpson. “Even Steve Jobs used to eat there. Yeah, he was a great tipper.”

But when Jobs learned more about his biological father, he made the decision not to meet him — and he never did. In this clip, he explains why: