Had the pictures on the screen been for her alone, cast there by a mental force denied his kind?

He sent out every bit of his mental force toward the Lady.

He had he knew, run into another barrier of mental force.

For thought, mental force, could pass from one universe to another, where matter could not.

Denial is a powerful mental force, causing us to do all kinds of things, like keep driving at 35 miles per hour.

Can you not feel its mental forces wrestling with you?

This man, in addition to reading minds, has certain powers of mental force.

A mental force that could not be overcome was forcing itself on us.

First: the Eddorians can be overcome only by mental force.

It promotes not only physical health, but mental force.