My most inspiring St. John's Prep. (Danvers, MA) lit. teacher was Bro. Kyrin [Ed Powers] CFX who began the 1st-day of Senior English (early SEP.'58) with the command: "Activate the Illumination!" directing the student sitting nearest the light-switch to snap it on.
Sometime that year, he suddenly wrote on the blackboard: "With a Ki-yi-yi... the Emperor of Ice-cream..." (from the eponymous poem by Wallace Stevens), revealing us to a fancifully surreal poetry we'd never imagined: suddenly I saw that poetry could be anything, anything, poetry & was instantly baptised into 20th-century modernism..
So I eagerly went in to Harvard Sq. (by MBTA) & bought him both a paperback & a hardbound copy of William Empson's 7 Types of Ambiguity (Noonday Meridian, 1955) that he had praised, & handed them both to him, much to his surprise. (I have a green-covered 1955 ppbk copy of it sitting on the shelf before me as I type this.)
After I graduated St. John's (JUN '59), Kyrin & I corresponded; the next year, I, as a Boston College freshman, I once advanced the idea that one could derive a theory of drama from Heidegger, theory of poetry from Husserl (who I was reading then.) Kyrin grandly 'tushed' me off.
After he became the principal of Xaverian Prep. (Brooklyn NY), he invited me to go to with him to the White Horse Tavern, Dylan Thomas' 'local' (pub) while he was in NYC, but I was never able to take Kyrin up on it - because I couldn't afford to travel down to NYC from way up in Lynn MA where I lived with my parents (until 1963.)
Kyrin & I lost touch after I graduated Boston College (Summer '63) because my life was in turmoil, partly because of the draft (which I beat by claiming to be gay, a story in itself.) I wrote him many years later that I was grateful that my son Alex was actually gay & so couldn't be drafted. Response: silence; Kyrin was probably closeted, but occasionally burst brightly into flames (see pars.1-2, above.). I owe him my sincerest thanks for his poetic influence. (I've just found out by calling Xaverian Prep that he died in 1982.)