Ernesto Priego discusses the man. The following is from Busa's essay, The Annals of Humanities Computing: The Index Thomisticus (PDF), which is a delightful read:
I feel like a tight-rope walker who has reached the other end. It seems to me like Providence. Since man is child of God and technology is child of man, I think that God regards technology the way a grandfather regards his grandchild.
If the Jesuits produced more of his caliber, they would again be as formidable an intellectual force as they once were.