Linda

While the question of where cancer comes from continues to bedevil us, my English major background strongly suggests your psychology professor's quote as originating from Robert Burns[Scottish national poet (1759 - 1796)] Poem "To a Louse" - verse 8
[quote]O would some power the giftie gie us to see ourselves as others see us.
(O would some power the gift to give us to see ourselves as others see us.)
[/quote]
While the word gazer does not appear in the quote, in a Psychology and English course, the teacher discussed James Joyce incorporation of Burn's concept into Finnegan's Wake based on Joyce's study of Freud's case history of the Wolf Man (From the History of an Infantile Neurosis). Gaze and Gazer have been traditionally used in translating that Freudian work into English. I'd dig up the exact quote but it's been 43 years since that college class and I seem to have misplaced my notes.
Charm