"Knowledge is power", says the one who has it. A wise king who reigned more than 3,500 years ago and acquired unsurpassed riches and fame also said the same thing. He even compared the advantage of knowledge to what money can provide: That knowledge preserves its owner alive. While this is true in may cases, the same king however eventually realized that there is even more important than knowledge and money.
That is wisdom. Wisdom is the ability to put knowledge to good use. Having little knowledge with the ability to use it properly is better than acquiring all the knowledge in the world without using them. Acquiring wisdom and understanding enables the one who possesses them gain power and money. But even without money and power, the most important of all that wisdom can provide is the preservation of life.