[2] While yet a young priest he was chosen by the episcopal management of the Irish College in Paris, as vice-president of that institution; which position he occupied for about four years.
So satisfactory was his work that, on the death of Father Hand, he was appointed President of All Hallows missionary college in Dublin, and for years guided, fashioned, and made effective the discipline and teaching of that well known institution.
[6] He found time to conduct retreats for priests and his addresses which have come down to us under the title "Allocutions to the Clergy" are characterized by profound thought, expressed in an elevated and oratorical style.
[8] He also declared that "when we look down into the fathomless depth of this infamy of the heads of the Fenian conspiracy, we must acknowledge that eternity is not long enough, nor hell hot enough to punish such miscreants.
O'Neill retorted “It is better to be in hell with Fionn than in heaven with pale and flimsy angels" (referencing the 12th century Acallam na Senórach on Oisín's arguments with St.