"For myself, I do not now know in any concrete human terms wherein my individuality consists. In my present human form of consciousness I simply cannot tell"

In this quote, Josiah Royce is expressing his uncertainty about the nature of his uniqueness. He is confessing that he does not have a clear understanding of what makes him a distinct individual in human terms. In spite of being self-aware and mindful, he is not able to identify the precise attributes or characteristics that define his personhood. This recommends a deep philosophical questions into the nature of personal identity and the concept of the self.