It was as if the ground itself spoke to her, revealing hidden knowledge of those who had passed.

It contains information about the hidden knowledge of the universe.

Especially when Spock nodded at him, as if to say the teacher condoned the student's report of hidden knowledge.

It is from such masters that I have learned my hidden knowledge.

His answer was a whispered laugh that spoke of hidden knowledge.

But your higher self has access to the hidden knowledge that is the truth of your future life.

Using mathematical analysis, he is beginning to uncover this hidden knowledge.

This black pit of hidden knowledge around you contains every secret in the universe.

The communication between his characters is depicted in simple conversations, but with a hidden knowledge of each other.

The hidden knowledge of The Shadow would be needed in the approaching crisis.