Defining intelligence it's not easy at all. May be every body thinks he/she is familiar with it. When you hear about intelligence what comes to your mind? for example when a web page or search engine suggests you a new feather or result, that may causes you wonder and you think how wise it is, wow omg! or when a software recognizes your voice and by the means of that you can do jobs just ordering by saying the commands, or when you see a dog solving a certain problem to get what it desired, for example get inside the house by opening the door by pooling the handle, or so on, Such things sounds smart things. But defining intelligence it's not as easy as this examples are. The phenomena such as memory, problem solving, originality, talk ( using a certain language to transmit a message), inference, abstract thinking, even thinking by itself, Creativity, Knowledge, learning, reasoning and planing are ale aspects of the intelligence or the wisdom. A creatures must be intelligence at first to be able make civilization, so the foreign life must be intelligent so it can create it's own civilization. How a living thing could be called intelligence? this is a primary question. So in next issues I'll try to explain the intelligence. Hope you would help me by your discussions and criticism.