This article examines the expression “The way of the mind is one” as a common idiom in Turkish. There is a discussion about the philosophical content of this expression, which is also common in everyday life. First, the syntactic and then the semantic structure of this expression is examined. Later we will try to find the equivalent of this expression in the philosophy of Plotinus. This article attempts an approach by relating the common idiom primarily to Nous in Plotinus’ philosophical system. The associative and unifying function of Nous is the most important connecting factor in this context. On the other hand, the concept of the One in Plotinus’ philosophy provides another topic for investigation. Therefore, the relationship between Nous and One also serves as an auxiliary element for the thesis of this article. The concept of contemplation as the highest competent activity of Nous offers us rich clues for this path. In the act of contemplation, the union of thought with the object of thought, the disappearance of distinctions is our most fundamental basis. It should be noted, however, that the ascent from multiplicity to unity in Plotinus’ philosophy has also guided this work. Based on these results and in the light of Plotinus’ philosophy, we will conclude that the way of the Mind is unitive, unifying and one.