The shadows are just as important as the light

Every thing is importance, just that how do you know about its value. If you need it, it is valuable and necessary for you. But if it is not necessary or you do not want it, it will be useless. But in fact, everything has equal value up to user and how to use them. For example, diamond and rice. If we talk about the price, it should be diamond. but if we are in the forest, we can not find any its value. On the other hand of rice, although it is worthless but it make us full and still alive. So you have to think that everything has equal value but which one has more valueable is up to situation.