Thanks a lot. I think you are right. 

So does this mean that Alexander just made it up that Ginsbergs poem is a response to something C. S. Lewis has said?

It seems like Alexander makes a point that C. S. Lewis once said: ”what does it? Earth could be fair, and all men glad and wise. Instead, we have prisons, smokestacks, asylums. What sphinx of cement and aluminum breaks open their skulls and eats up their imagination?” 

and that Ginsberg answered this question with the his Poem Howl in which he talks about Moloch. 
But this is not the case or how am I to interpret this? 

It is for my bachelors degree project so what I am looking for is whether Ginsberg answered C. S. Lewis or whether Alexander just made up a quote out of thin air and put a meme as the reference. 

C. S. Lewis’ question in Hierarchy Of Philosophers

I have REALLY looked for where C. S. Lewis has actually said this. Scott Alexanders link to where he has gotten it from doesn't work anymore. The only place I can find that Lewis should have said this, is in Alexanders blog. I would really like to find out from where the original quote is from. I know its obviously from Hierarchy Of Philosophers, but I cant find that text anywhere. Not in libraries, not on Google Scholar, not on PhilPapers, not anywhere. What is up with that, and can anyone help.