The foundation of the rule is the special position of those publishing and conducting newspapers, who accept responsibility for and are liable in respect of the matter contained in their journals, and the desirability of protecting those who contribute to their columns from the consequences of unnecessary disclosure of their identity The appellant stands upon these decisions and says that they disclose a development which, in reason and logic, should not stop at discovery, but should supply a general justification for withholding the names of contributors and the sources of information at all stages of any legal proceeding. The answer is that it is not a rule of evidence but a practice of refusing in an action of libel against the publisher, &c., of a newspaper to compel discovery of the name of his informants. It "rests not on a principle of privilege but on the limitations of discovery", to quote the comment of Professor Wigmore, who expresses himself somewhat strongly against the pretensions to a privilege on the part of journalists: Treatise on Evidence, 2nd ed., vol. 5, sec. 2286, n. 7.
1. (1940) 63 C.L.R., at pp. 104-105.