I never met Richard Hackman in person. But through his work I feel I have had a special relationship with him. For those interested in teams he was reference,address and mountain. His work shaped my generation and we all, explicitly or implicitly, positioned our points of departures against his simple but yet to be surpassed models. The PhD students produced by the "Hackman system" could be recognized from their first published paper by the elegance of the framing, the rigor of the research, and the thoughtfulness of the writing. How many others have set so many on the wise path? Those who know, know. He will be missed.