1. An apparatus for selecting a motion signifying artificial feeling, the apparatus comprising: an feeling expression setting unit configured to set probabilities of each feeling expression behavior performed for each expression element of a machine for each predetermined feeling; a behavior combination generation unit configured to generate at least one behavior combination combined by randomly extracting the feeling expression behaviors in each expression element one by one; and a behavior combination selection unit configured to calculate an average for the probabilities of the feeling expression behaviors included in each behavior combination for each feeling of a machine and select behavior combinations in which the average most approximates the predetermined feeling value of the machine from each behavior combination.