In 2024, The Declaration of Istanbul Custodian Group (DICG) conducted a series of in-depth interviews with past and present leaders of the Declaration of Istanbul (DOI) to capture their experiences, perspectives, and the lessons learned over the years. These conversations highlight the personal journeys of leaders who have been instrumental in shaping the DOI, how they first became involved, and the enduring importance of this landmark initiative in promoting ethical practices in organ donation and transplantation worldwide. By sharing these reflections, the DICG underscores not only the ongoing relevance of the DOI but also the collective commitment of its leaders to uphold its principles and inspire the next generation of professionals in the field.