Now for full discloser, I am a social worker. Therefore my training in theory has to do with them in their current forms and is specifically in terms of the practical effects it has on society and on the individual. So sometimes I forget that others received a more classical training and may look at these theories in a more theoretical/abstract way (imagine that ) So I'm sorry if I have confused anyone. When I say humanism I am most specifically meaning neo-humanism or secular humanism in its current form. For a brief description see http://www.kidsworldwide.org/neohumanism.htm.
Neo-humanism can be described as Budhism lite. It is about universal love with an emphasis on loving self and empowerment of self and sort of abstractly loving all living things above your own family or religion. It is different than Secular humanism because its contempt for the church is much subtler. I sort of compare it to the lies that Ginger the Cat tells the Narnians in LB. They are all the more potent because of the truth mixed in with the lies. (I agree that we should love all living creatures - however as a Christian I believe that in our sinful forms we are only capable of that love if we first love God and allow His love to shine through us.)
Neo and secular Humanism have been incorporated into many children's books and movies. Also into the Girl Scouts and even public school education. For evidence on the Girl Scouts see this link or google the words "girl scouts" and "humanism" for more about it. http://www.secularhumanism.org/library/ ... y_15_3.htm
to get the ball rolling on this debate I will discuss the one sequence in the movie that really stood out to me as being humanist even during my first viewing. Lucy in the movie sees a spell to make herself look more beautiful (or like Susan as the movie interpreted it). She then rips the spell out and later starts to say it (possibly in a dream sequence I was confused if anyone knows feel free to correct that). She looks in the mirror, sees Susan and smiles. But then is drawn into a reality in which only Susan, Peter, and Edmund exist and they known nothing of Narnia. Aslan tells her, "You have wished yourself away and with it so much more." implying that had it not been for her, none of them would have found Narnia. Lucy then later tells Gael, "You [Gael] should be just like you [Gael]". How empowering....
Contrast that sequence with the book scene in SC where Aslan tells Jill he called her. She objects stating that she and Eustace had called Aslan.
"'You would not have called to me unless I had been calling to you,'" said the Lion - The Silver Chair
In VDT the book, Narnia has several times when it could have a terrible fate. And it is always through a member of the crew wanting to elevate themselves through means of one of the deadly sins. When Lucy is tempted to make herself more beautiful that is one time that Narnia could have been changed/ corrupted. In her vision, she sees herself more beautiful than Susan and then so beautiful that Kings fight over her. Narnia and all the surrounding lands go to war because of her beauty. With Aslan's help and her denial of her selfish desires, she saves Narnia. She overcomes not through high self-esteem but because she loves Aslan enough to not go through with it when He warns her not to.