The gap between theory and ethical action is known an important problem in ethics and education. Analyzing the relationship between theory and ethical action and deciding the elements having to do with optional actions of human and their interaction, one may perceive the reasons and roots of the gap and, on this basis, improve educational theories to attain the harmony between theory and action. This paper, paying attention to the principles of optional actions with regard to the part of indirect perceptions and the cause of the gap, has presented a solution for the problem. As is understood by Allamah Tabatabaei`s view, the gap lies in a failure in human system of indirect perceptions when willing to action. In other words, the gap can be considered as the weakness of human will in opposing mental obstacles against ethical decision and action.