The most valuable possession you can own is an open heart. The most powerful weapon you can be is an instrument of peace.

An alliance of civilisations can be our most powerful weapon in the fight against terror.

The most powerful weapon on earth is the human soul on fire.

The indisputable fact is that nutritional science is the most powerful weapon available to win the war on cancer.

The most powerful weapon in the world, as far as I'm concerned, is the camera.

You know, the taxing authority of the United States is our most powerful weapon. You know, the reason we separated from England was because the British were using it abusively.