Science and religion are the two most powerful forces in the world. Having them at odds... is not productive.

The two most powerful warriors are patience and time.

Necessity is the most powerful divinity the world knows, and necessity is the resultant of physical forces set in operation by ethical forces.

Variety, multiplicity are the two most powerful vehicles of lust.

I myself consider myself the most powerful figure in the world.

In 1763 the English were the most powerful nation in the world.