What is the theme in a wrinkle in time

Explanation: The core themes, or predominant concepts, in A Wrinkle in Time include the power of love and the value of individuality. The primary conflict, or clash between ideas or characters, is the contest between good and evil.

The power of love.

Explanation:

Throughout the novel, L'Engle depicts unconditional love as something wielded by the forces of good and not understood by the powers of evil. Mrs. Which tells Meg that she has something that IT doesn't have, and this weapon turns out to be her ability to simply love. Meg's unconditional love for Charles Wallace is what saves him from the clutches of IT and the strictures of the planet of Camazotz. It is also implied that it is the capacity to love that could save humanity and the earth from the shadow of evil that threatens to destroy it.