Studying and exploring the historical and developmental course of the basic jurisprudential opinions on the nature of will and its various aspects is one of the applied methods for drawing comprehensive and dynamic inferences from jurisprudential resources. This method has not received enough attentionor, it is better to say, no fundamental research has been conductedin this context, as research on the jurisprudential history of will is not a complex issue for the experts and scholars involved in the field of jurisprudence. From the perspective of this article, will, in relation to legal actions and ethical conducts and as a unique feature of an action, is not only the root of human responsibility and the distinguishing feature of the humanity of human beings in practice, but it also is the most important indicatorfor measuring soundnessand erroneousness of legal acts. Despite the importance of will and its synonymous concepts such as intention and consent,this vital issue has been constantly debated and disputedby scholars in the field of jurisprudence and law. A deeper evaluation ofscholars’ range of opinion differences on will reveals that most of the disputes and disagreements arise from the differences of opinion and disagreements in intellectual and mental foundations and at least three fundamental and theoretical stages can bepointed outin the history of jurisprudence and its course of evolution.