Take a bag filled with water and stand it upright on a flat surface. Open a few more holes and the water will flow out. When the water is almost gone, the bag will fall over.
American scientist Franklin He once said: "An empty bag cannot stand upright." French scientist Romain Rolland also said: "Wealth is unreliable. Today's rich man may be tomorrow's beggar. Only your own knowledge and talent are the real capital." The famous saying of ancient Chinese godson also mentioned: "Others leave to their descendants a lot of gold, but I leave only one scripture to my descendants." These words show us a very important truth, that is, to survive and develop in fierce social competition, we can only continuously improve our abilities. To be self-reliant and self-reliant, a person must have a wealth of knowledge. If a person does not have knowledge, he will be like an empty bag without anything, unable to stand on his own.