I had high hopes for this, but was ultimately disappointed.

There is a theme of taking responsibility and going above and beyond the call of duty which to my mind contrasts poorly with the occasional interjections of "put your faith in God and everything will turn out all right". I find that the allusions to the science suffer from the same kind of metaphysical waffling. Supposedly Meg's father is a brilliant physicist, but tessering and tesseract is presented as something he and his colleagues have just stumbled upon and have no real idea of how it would work. I'm not expecting hard sci-fi and/or a physics essay in the middle of a children's or YA novel, but to my mind A Wrinkle in Time misrepresents scientists and the way they work.

Another thing I found unsatisfactory was the rather abrupt ending, where Meg after rescuing Charles Wallace is transported directly home with her father and Calvin, though the latter two were left on a strange planet when Meg went on her rescue mission. There is also the unresolved matter of the entity they were fighting which still seems to have it's claws in or on earth and Camazotz. I understand that it's part of a series but my impression is that it was originally a stand-alone novel.