The ships made in ancient times were all driven by the wind, so when they were made, they used a cloth to give them power. This cloth is called sail. Sailboats need wind, so later people begged to be able to get the wind and make the sailboat sailing smoothly, to sail against the wind, fearless.
Firm direction, ideal in the distance. The first step to success is to set sail. Fight against the wind and waves, never stop.