I'm glad that I chose a good quote, Bogo. There's a hymn from the Episcopal Hymnal to the tune called "Georgetown" that, I think, has some of this idea in a sort of way. I'll try to find the melody on-line so you can hear it if you like.
They cast their nets in Galilee
just off the hills of brown;
Such happy, simple fisherfolk
before the Lord came down.
Contented, peaceful fishermen
before they ever knew
The peace of God that filled their hearts
brimful, and broke them too.
Young John who trimmed the flapping sail,
homeless in Patmos died.
Peter, who hauled the teeming net,
head-down was crucified.
The peace of God, it is no peace,
but strife closed in the sod;
Yet, brothers, pray for but one thing
-- the marvelous peace of God.
Well, *I* think it possible that Lewis had some Divine Inspiration.