Philosophy is the product of human thought. Thought comes from suspicion since human wants to seek answers. Therefore various hypothetical doctrines have come into being.Ordinary people always have doubts, but once they often hear certain explanation, they are convinced and believe these doubts have already been resolved.After the inspection, the philosophers find that there were still many doubts existing in the issues the ordinary people thought have been solved; therefore, they raised various questions and seek for answers again.If these philosophers concluded various answers, their followers believed that these problems have already been solved; however, some philosophers thought that there were still many doubts.Then, they proposed many other distinct issues and wanted to figure them out.Some of the problems have ever been thought as shall never be the problem; some of the problems have ever been thought to be a simple one but then turned to be a complicated one.At first, people thought that the more answers, the fewer problems; however, the fact is that the number of problem increases with the answer.Such recursion has lasted for thousands of years and resulted in the current status of the philosophical field.From now on, if such condition will continue to recur, who knows what would happen?Half of such conditions result from the gradual effect of culture; half shall owe to the genius of the great philosophers.