Chesterton on agnosticism

It is very good for a man to talk about what he does not understand; as long as he understands that he does not understand it. Agnosticism (which has, I am sorry to say, almost entirely disappeared from the modern world) is always an admirable thing, so long as it admits that the thing which it does not understand may be much superior to the mind which does not understand it.

--A Handful of Authors, p.163; hat tip: ???