In his book My Brother Evelyn and Other Profiles Waugh describes Hayes as "A North Country man; he was nearly forty; he was brisk, assured, purposeful, with his eye on the main chance. He was the first person I heard analyse success." He gives Hayes's account of the writing of the poem:
"I wrote The Green Eye of the Little Yellow God in five hours, but I had it all planned out. It isn't poetry and it does not pretend to be, but it does what it sets out to do. It appeals to the imagination from the start: those colours, green and yellow, create an atmosphere. Then India, everyone has his own idea of India. Don't tell the public too much. Strike chords. It is no use describing a house; the reader will fix the scene in some spot he knows himself. All you've got to say is 'India' and a man sees something. Then play on his susceptibilities.
His name was Mad Carew. You've got the whole man there. The public will fill in the picture for you. And then the mystery. Leave enough unsaid to make paterfamilias pat himself on the back. 'I've spotted it, he can't fool me. I'm up to that dodge. I know where he went.' No need to explain. Then that final ending where you began. It carries people back. You've got a compact whole. 'A broken-hearted woman tends the grave of Mad Carew' They'll weave a whole story round that woman's life. Every man's a novelist at heart. We all tell ourselves stories. That's what you've got to play on."