What is powerful about a gray painting with white dots on it?

The Jackson speech was more powerful on television than in the hall.

He says that Oil money made a primitive and violent culture powerful on a global scale.

Yet the book remains powerful on its own terms.

Environmental groups are powerful on the East End because of the public support they command.

The effect was especially powerful on Monday night at his fall 2007 collection show.

It's powerful enough on a personal level, without me trying to change the world.

The Inca army was the most powerful on the continent during the period.

Studies suggest that the combination of drugs is more powerful than either on their own.

If America is ruined, we will not be able to remain powerful on our own.