PIUS, POPE XII
See his centennial letter to the Congregation of Holy Cross.
"To our Beloved Sons, Pupils of the Fathers known as the Fathers of Holy Cross in the College of Notre Dame du Lac, Diocese of Fort Wayne, Indiana.
Apply yourselves, therefore, zealously to the study of letters and the sciences, but even more zealously to piety, lest you be puffed up in a vain knowledge and show yourselves docile to your teachers who devote themselves entirely to your interests." Reply to address from the Students.
-- Ave Maria. Sept. 5, 1872.