How do the characters in Madeleine L'Engle's A Wrinkle in Time communicate without words?

, by , is a story that
contains many elements of fantasy and science . One of them is the ability of people from earth
to travel to other planets, and on those planets are creatures which would be considered aliens.
The story is a battle between good and evil, and it is fought primarily (at least by humans) by
three members of the Murry family--Mr. Murry and two of his children, Meg and Charles
Wallace--and a new friend of the two children, Calvin O'Keefe.

One of the
ways they are able to fight the force of evil called IT is through a kind of telepathic
communication L'Engle calls "kything." While Calvin does seem to be connected to the
two Murry children, the connection between Meg and her brother is the strongest. It is these two
who are able to save their father and their planet from the evil of IT.

One
thing kything can do is send multisensory images, without any speaking, over distance, as in
this example with Meg:

The movement assumed shape and
form, and images were kythed to her mind's eye, visual projections, superimposed swiftly one
over the other; she tried to send them to Mr. Jenkins:

a primordial fern
forest;

a giant bed of kelp swaying to submarine currents;

a primeval forest of ancient trees, with rough, silver bark....

To
the visual images music was added....

Of course the other
way kything works is to send spoken messages, or fragments of messages, to another person. In
fact, at the end of the novel, Meg manages to save Charles Wallace by kything him her love and
encouragement, which were stronger than the hate emanating from IT.

In short,
in this young adult novel, certain characters are able to communicate telepathically (without
physically speaking) through kything.