riches or knowledge!

When we were children we had composition lessons. A common subject in it was "which of them is better: knowledge or riches?". majority of children wrote that knowledge is better, because if we have knowledge we can have money, but someone said that both of them are important, because if we don't have one of them we can't have other one.
Now I'm 25 years old with religious visions that states the importance of them isn't something absolute, and it's related to way that you use them. In my opinion God is the most important existence in our life. He created us then only he knows what is better for us, if we use knowledge and riches to him way it's excellent.
For example prophet Solomon had a lot of possessions and power and he used them to improve society and he made an excellent government for Bani Israel but Qaroon -a person of Bani Israel in the age of prophet Moses- had a lot of money and people regret to him. Great people said to him to help the others but he didn't and then earth cracked and ate him and his belongings. knowledge can be divine or evil. Men can create bombs and guns with it and kill a lot of people -like nuclear bombs that USA use for Japanese- and can use it for humanity like Prophet Joseph that used his knowledge to save people from famine.
What's your opinion?