Isaac

Augustus Waters is Isaac's best friend and emotional anchor throughout the novel. They bond over video games, dark humor, and the shared experience of living in the cancer world. Their friendship runs deep enough that Augustus literally guides Isaac — blind and furious — through smashing trophies after Monica's breakup, and Isaac delivers a grief-stricken eulogy for Augustus at his pre-funeral.

Isaac smashes trophies in Augustus's bedroom as a raw, physical release of grief after his girlfriend Monica breaks up with him just before his surgery. Augustus's parents allow it, and Augustus narrates each trophy's location aloud so Isaac, who cannot see, can find the next target. The scene captures grief as an ugly, bodily act — absurd and tender at the same time — rather than something graceful or ennobling.

At Augustus's pre-funeral, Isaac admits he cannot see his friend — but then pivots to say he can still hear him. No verbatim quote is recorded in the available material, but the emotional core of the eulogy is that pivot: blindness reframed not as a lesser form of knowing but as a different, perhaps keener one. It is the moment Isaac sheds his sardonic shell entirely, expressing love with devastating simplicity.

Monica repeatedly vows "always" to Isaac as a promise of commitment, which makes her pre-surgery breakup — delivered through a friend — a particularly bitter betrayal. The word becomes a recurring dark joke throughout the novel, repeated by characters with heavy irony. Isaac's experience turns "always" into a symbol of language's inability to hold real commitment, especially in the face of illness and fear.

Monica breaks up with Isaac right before his surgery that will leave him completely blind — an act of abandonment the novel frames as cowardly and devastating. The provided material does not give Monica's explicit stated reason, but her departure strips Isaac of his relationship at the exact moment he is losing his sight, forcing him to grieve two losses simultaneously and triggering his explosive trophy-smashing scene.

Hazel and Isaac are fellow Support Group members whose bond deepens primarily through shared grief over Augustus. Hazel witnesses both Isaac's heartbreak over Monica and his eulogy for Augustus, observing him with the attentiveness of someone who fears what loving a sick person costs. Their mutual mourning after Augustus's death creates a connection that the novel leaves largely unspoken but real and unmistakable.

Isaac is both — his sardonic, blunt humor is inseparable from his emotional honesty, and that combination is precisely what makes him essential to the novel. He refuses to perform the role of noble, inspiring cancer patient, puncturing sentimentality with well-timed quips. Yet the same voice that delivers dark jokes also delivers a pre-funeral eulogy of devastating sincerity, showing that humor and grief are not opposites but survival strategies used together.

Isaac loses his remaining sight to retinoblastoma after surgery, leaving him completely blind by the time most of the novel's events unfold. He has already lost one eye when readers first meet him at Support Group, and the upcoming surgery — and the total blindness it will bring — looms over his early chapters. Rather than treating blindness only as tragedy, the novel reframes it through Isaac's pre-funeral eulogy as a different mode of perception.