The discretion of a judge is the law of tyrants: it is always 
unknown, it is different in different men; it is casual, and 
depends upon constitution, temper and passion. In the best, it 
is oftentimes caprice; in the worst, it is every vice, folly and 
passion to which human nature is liable...

- Benjamin N. Cardozo
(Quoted in 1977 INSC 232)