▁of ▁counter - re formation , ▁Sk arga ▁commonly ▁pre ached ▁against ▁non - C atholic ▁denomin ations ▁and ▁helped ▁secure ▁funds ▁and ▁privileges ▁for ▁the ▁Society ▁of ▁Jesus . ▁ ▁In ▁ 1 5 7 3 ▁he ▁was ▁re ctor ▁of ▁the ▁Wil no ▁Jes uit ▁College , ▁prec ursor ▁to ▁the ▁Wil no ▁Academy ▁( V il nius ▁University ). ▁In ▁ 1 5 7 7 ▁he ▁became ▁a ▁professor ▁at ▁the ▁Krak ów ▁Academy . ▁That ▁year ▁he ▁also ▁finished ▁one ▁of ▁his ▁most ▁important ▁works , ▁The ▁L ives ▁of ▁the ▁Sain ts ▁( Ż yw oty ▁świ ę ty ch ), ▁which ▁was ▁published ▁two ▁years ▁later . ▁In ▁ 1 5 7 9 ▁he ▁became ▁the ▁first ▁re ctor ▁of ▁the ▁Wil no ▁Academy . ▁ ▁In ▁ 1 5 7 6 ▁he ▁published ▁Pro ▁Sac rat iss ima ▁E uchar ist ia ▁contra ▁ha eres im ▁Zw ing li an am , ▁ad ▁And ream ▁Vol an um ▁( For ▁the ▁Most ▁Sac red ▁E uchar ist , ▁against ▁the ▁Zw ing li an ▁Her es y , ▁to ▁And r zej ▁Wol an ). ▁In ▁ 1 5 8 2 ▁he ▁published ▁Ar tes ▁du ode c im ▁Sac r ament ari orum , ▁s ive ▁Zw ing lio - cal vin ist ar um ▁( The ▁Seven ▁P ill ars ▁on ▁Which ▁St ands ▁Catholic ▁Do ctrine ▁on ▁the ▁Most ▁Sac red ▁Sac r ament ▁of ▁the ▁Alt ar ). ▁Both ▁these ▁works ▁formed