Chesterton on catholicity that remains militant:
“…while it is local enough for poetry and larger than any other philosophy, it is also a challenge and a fight. While it is deliberately broadened to embrace every aspect of truth, it is still stiffly embattled against every mode of error. It gets every kind of man to fight for it, it gets every kind of weapon to fight with, it widens its knowledge of the things that are fought for and against with every art of curiosity or sympathy; but it never forgets that it is fighting. It proclaims peace on earth and never forgets why there was war in heaven.”
-G.K. Chesterton, The Everlasting Man, 183.