In order to securely preserve their secret arts, there was a need to shut themselves from the rest of the world and become radicals.

It means the secret art of communicating with the dead.

He did not want to dictate; writing for him was a secret art.

Oh, this master of the secret arts thinks my idea stupid.

The Egyptian magicians did the same through their secret arts.

He knew enough about the secret art not to underestimate its practitioners.

Maybe," said one, "they were all lies from the beginning, these secret arts and powers.

The weaving and sewing may only be done by skilled magi, who have spent years learning the secret art.

Portrait miniatures were a "secret art," and in addition to the technical qualities of the 146 works on view, every picture tells a story.

These are people who practise the secret arts of ninjutsu.