The quote "All loss is one, and one loss becomes all" from Diana Gabaldon's Outlander Series reflects the interconnected nature of loss. It suggests that an individual's experience of losing someone or something transcends that particular event, resonating deeply within their overall emotional landscape. This idea acknowledges the profound impact that every loss can have on one’s life, intertwining them into a shared human experience that amplifies the feeling of grief.

Within the context of Gabaldon's expansive narrative across the seven books, this sentiment highlights the recurring themes of love, separation, and the passage of time. The characters endure multiple losses that shape their identities and relationships. Each loss they face not only affects them individually but also reverberates through the web of their connections, illustrating how intertwined lives amplify sorrow and resilience in the face of adversity.