The reason why it can never succeed is this. God made us: invented us as a man invents an engine. A car is made to run on petrol, and it would not run properly on anything else. Now God designed the human machine to run on Himself. He Himself is the fuel our spirits were designed to burn, or the food our spirits were designed to feed on. There is no other. That is why it is just no good asking God to make us happy in our own way without bothering about religion. God cannot give us a happiness and peace apart from Himself, because it is not there. There is no such thing.
Passage for Further Reading:
About the Author:
C.S. Lewis (1898-1963) was an author, theologian and professor of English at both Cambridge & Oxford University. He wrote fiction (most famously The Chronicles of Narnia) and many Christian apologetic texts.