Any second language learning (L2) theories would regard the role of motivation as a key in the process of language learning. It is agreed that success or failure in L2 learning mainly relies on the extent to which a learner is motivated. Numerous researches and experiments in L2 learning have proved that motivation is vital to successful learning. Up to the present, we are still in great need of a deep and further understanding as to what motivation is and how important it really is. Any second language learning (L2) theories would regard the role of motivation as a key in the process of language learning. It is agreed that success or failure in L2 learning mainly relies on the extent to which a learner is motivated. Numerous researches and experiments in L2 learning have proved that motivation is vital to successful learning. Up to the present, we are still in great need of a deep and further understanding as to what motivation is and how important it really is.