The plans for this book were announced at the time of Ninian Stephen’s eightieth birthday, almost four years ago. Each of the ten contributors focuses on one of his public roles in the last thirty-five years – five of them in Australia, and five on the international stage. The last of the Australian positions, ambassador for the environment, is a bridge between the two. Kenneth Keith’s chapter finds another bridge: in Koowarta v Bjelke-Petersen (1982), on Stephen’s last day as a High Court judge, his judgment decisively transformed the issue of racial discrimination in Queensland by recognising its international potency.