Tut, man, decide promptly, but never give any reasons for your decisions. Your decisions may be right, but your reasons are sure to be wrong.
William Murray, 1st Earl of Mansfield (1705-1793) British barrister, politician, judge, legal reformer
Quoted in John Cordy Jeaffreson, A Book About Lawyers, Vol. 1, ch. 12 (1867)
(Source)
When asked by the new governor of a West Indies island how to apply the law.