Faith and my book...

The book I'm reading is called " Out of The Silent Planet " by: C.S. Lewis and I do believe that faith is involved some way in this book. In the first couple of chapters it tells about this guy going on a journey and this lady mistaking the guy for her missing son. I bring this part up because it shows that even though her son has been missing, she still has faith that he will come back soon and return to him. She doesn't see it like faith is where you dont have to see it you just beleive it. And thats what this lady is doing, she is having faith that her son will come home sometime soon and not giving up.