Propositions in terms of the existence of their subject in classic logic

The human mind does not only form concepts and judgments about the objects we experience. There are such words in the language that some do not and will not have any individual to which the words refer. However, we still do not refrain from using truth-value expressions about these words. Based on the concept of maratib al-wujud, which expresses the hierarchy between existence in the tradition of Classic Logic, this study deals with existence from different degrees as a subject in the proposition. While doing this, our study discusses the degrees of existence, establishing a proposition, the types of propositions formed with the existence of different degrees as subject, and ultimately, the syllogisms which is formed on four-figure axes with various combinations of such propositions. Key words: logic, existence, proposition, syllogism, subject.