C.S. Lewis And Socialism

He tried to warn us:

It (The Bible)  tells us that there are to be no passengers or parasites: if man does not work, he ought not to eat. Every one is to work with his own hands, and what is more, every one's work is to produce something good: there will be no manufacture of silly luxuries and then of sillier advertisements to persuade us to buy them. And there is to be no "swank" or "side," no putting on airs. To that extent a Christian society would be what we now call Leftist. On the other hand, it is always insisting on obedience-obedience (and outward marks of respect) from all of us to properly appointed magistrates, from children to parents, and (I am afraid this is going to be very unpopular) from wives to husbands...

If there were such a society in existence and you or I visited it, I think we should come away with a curious impression. We should feel that its economic life was very socialistic and, in that sense, "advanced," but that its family life and its code of manners were rather old-fashioned-perhaps even ceremonious and aristocratic...

Now another point. There is one bit of advice given to us by the ancient heathen Greeks, and by the Jews in the Old Testament, and by the great Christian teachers of the Middle Ages, which the modern economic system has completely disobeyed. All these people told us not to lend money at interest: and lending money at interest-what we call investment-is the basis of our whole system. 

Quoted from Mere Christianity: 3. Social Morality.