“Nature” is the common origin of human values in human being and the source of society’s excellence. However, this issue, whether the instincts of human race also affect the ground for the appearance (of the Imam) or not, can be explained by analyzing the views of Master Motahhari in the form of two logical analogies. The result of first analogy is that a pure nature, alongside the free will, guides human to the features of Mahdavi society, and based on the second analogy, the same nature, as one of the examples of “truth”, will always be original and dominant at the time of conflict between the right and wrong in the logic of the Qur’an, and this issue is also evident in the divine verses and traditions. Nature and its rules, although sometimes deviate from the right path; are original and lasting and will play a positive role in paving the way to the realization of the Mahdavi global community. The present article is presented in the form of library collection and descriptive-analytic method.