He was for a time on the Toronto Week, then came to the United States, was employed by the American Press Association between 1897 and 1903, and afterward contributed to many periodicals, notably The Outlook.

[2][3][4][5] His Nerve Control and How to Gain It (1918) was described as a "reliable book which can be put into the hands of the nervously ill but intelligent patient.

"[6] Bruce who took interest in psychical research, was a believer in telepathy and Frederic W. H. Myers' concept of a subliminal self.

Philosopher William Pepperell Montague took issue with his statements about telepathy, noting that he did not address the known objections.

[7] His book Historic Ghosts and Ghost-Hunters (1909) is generally skeptical of poltergeist cases, concluding they are best explained by fraud and psychological factors such as hallucination or suggestion.