"There is a second type of mind which produces satire with the quality of greatness. That is embodied in the satirist whose passions are released and let go by some intolerable sense of wrong. He is maddened by the sense of men being maddened; his tongue becomes an unruly member, and testifies against all mankind. Such a man was Swift, in whom the saeva indignatio was a bitterness to others, because it was a bitterness to himself."
January 1, 1970
https://en.wikiquote.org/wiki/Heretics_(book)