We thank our contributors, whose engagement, enthusiasm, and commitment made this venture possible. Their writing for this volume, as well as their various intellectual energies as researchers, teachers, mentors, and interlocutors exemplify our best hope for the future vitality of public intellectualism. Each of us in turn owes a singular debt to John Charles Polanyi, whose dedication as academic and activist provided the inspiration for this volume, and we thank Dr Polanyi for his support of this project, as well as for his generous Foreword. We are grateful to the support of the University of Toronto Press, especially to Richard Ratzlaff for his unfailing commitment, advice, and assistance at every stage of this volume’s development. We both thank the Social Sciences and Humanities Research Council of Canada for its generous support of our research. Finally, we thank our partners for their support intellectual and nonintellectual, public and private, and always hopeful.