Oh, I love her! She's such a genius, the way she incorpates mathematical/scientifical/philosphical concepts into her work, that may go way beyond your preconceived notions of the universe in general.

I must have read ''A Wrinkle in Time'' a thousand times and ''A Wind in the Door'', I think, four times. The only book I didn't enjoy was ''A Swifly Tilting Planet'', because the whole book just dragged. Not her best book... Another good one is ''A Ring of Endless Light'', about a girl who could communicate telepathy through dolphins.

Go check it out if you haven't done so already!