In an earlier concurring opinion when he was on the D.C. Circuit — i.e., before joining the Supreme Court as Chief Justice of the United States (his official title) — John Roberts referred to "... the cardinal principle of judicial restraint — if it is not necessary to decide more, it is necessary not to decide more ...." [0]
In an earlier concurring opinion when he was on the D.C. Circuit — i.e., before joining the Supreme Court as Chief Justice of the United States (his official title) — John Roberts referred to "... the cardinal principle of judicial restraint — if it is not necessary to decide more, it is necessary not to decide more ...." [0]
[0] https://scholar.google.com/scholar_case?case=192785774326304...