When James C. Collins and Jerry I. Porras wrote their hugely popular 1994 book, Built to Last: Successful Habits of Visionary Companies, they began by stating clearly that they did not mean to write about visionary leaders. Their goal was to find visionary companies — the crown jewels of their industries — and discover what made them extraordinary. Then questions arose about the extent to which the principles of Built to Last might apply to individuals. That sparked another investigation that has now led to a follow-up book, Success Built to Last, which will be published by Wharton School Publishing later this year.