What does it mean its human meaning can perhaps only be understood through the experience of a single human being?

This phrase suggests that the essence or significance of a concept, emotion, or experience is deeply personal and can only be fully grasped through an individual's unique life experiences. It implies that human meaning is subjective, shaped by personal narratives, feelings, and contexts that vary from one person to another. Therefore, to truly understand such meaning, one must engage with it on a personal level, as it cannot be entirely conveyed or understood through generalizations or abstractions.