Mere Christianity is a book written by CS Lewis attempting to bring different denominations together through logic and reasoning rather than the differences in doctrine that may have separated them at some point or another. He brings out basic and everyday common knowledge about Christianity. He is attempting to bring anyone to Christianity that reads the book.
Lewis starts off by talking about how when one is searching for a religion it is like looking through many doors trying to decide which religion it is that fits him or her the best.
I do not agree with what Lewis when he is talking about good or bad impulses. There are many examples of bad impulses such as murder or any other bad intention that we have that may lead us to sin.
I agree with most of what CS Lewis states in this article except for the good and bad impulses. I agreed when Lewis when he stated that today we have lessened the word Christian to be something such as just being a good person. We must be very careful when throwing the term around.