Tim George gave the example of two warships that had the largest full-load displacement in the world: U.S. Navy aircraft carriers. The USS Nimitz and Dwight D. Eisenhower each weigh about 91,000 tons. They are over 1,000 feet long and can travel over 30 knots per hour, powered by engines that can generate 280,000 horsepower. Each of those carriers is manned by a crew of 6,100. But as big as these ships are, they are both turned by one man steering a rudder 1/1000th the size of the ship. A tiny rudder can change the direction of those great ships.
(Adapted from SermonCentral sermon "The Power of the Tongue" by Tim George - James 3:1-12. From a sermon by Rick Crandall, Taking On our Tongue Trouble, 8/24/2012)