Afterward he kept looking at the child with surprise. I don't think he had ever really believed in its existence before.
Chapter 7 · Narrator
Context
Daisy's daughter Pammy is briefly brought into the room by a nurse. After the child is introduced to the guests, Nick observes Gatsby staring at her with an expression of disbelief, as though the child's physical reality disrupts something fundamental about his understanding of Daisy's life.
Analysis
Gatsby's inability to 'believe in' the child's existence reveals the extent to which his fantasy of Daisy has required erasing the five years of her lived experience—her marriage, motherhood, and entire domestic life must be negated for his dream of repeating the past to remain viable. The child is living proof that Daisy's life continued without him, that time cannot be reversed, and that the woman he loves has become someone whose full reality his dream cannot accommodate.
How to Use in Essay
Excellent for essays on Gatsby's desire to repeat the past and his willful denial of time's passage, or for arguing that his love for Daisy is fundamentally solipsistic—directed at his own created image rather than her full human reality.