Aristotle and Kant reveal their interests in the concept of time within the relationship of time with “ego”. According to this, in Aristotle’s thought, an ego is asserted, and the concept of time is attached to it; however, at the same time, this ego becomes itself whose constitution necessarily includes the time in the process of its constitution. Therefore, attachment of the time to the ego by means of the soul does not assert contingency. On the contrary, it refers to necessity. On the other hand, the concept of time in Kant’s thought seems both to directly be constitutive for the ego or the “I” and to have a part which, to a great extent, overlaps with the ego. In this sense, besides time’s being necessary for the subject, the former is, at the same time, in need of the latter. In this article, the concept of time, which is grounded and attached to “ego” by Aristotle, and its transformation in Kant’s thought will be explicated. Then, the emphasis of this thought line, generated by Aristotle and Kant, on the subsistence of the time and ego side by side will be unveiled. In the end, after revealing the relatedness of these concepts in the thoughts of these thinkers, the time and ego will be posited as they sustain one another and are directly contiguous to each other. In this context, whilst the time, through the ego, becomes continuous, the ego, by means of the time, becomes able to develop its self-consciousness to concomitantly comprehend its totality as itself.