In "The Worthing Saga," Orson Scott Card uses the metaphor of cutting wood to illustrate the complexities of human identity. While individuals can manipulate their experiences and memories, the inherent qualities that shape a person—akin to the grain of wood—remain constant. This suggests that identity is influenced not only by personal choices but also by deeper, intrinsic characteristics that define who we are.

Card emphasizes that memories are not the sole determinants of our identity; there is an underlying essence in each person that contributes to their mental structure. Just like the grain in wood influences its strength and shape, the foundational aspects of an individual's mind play a crucial role in shaping their identity, underscoring the intricate relationship between memory and the core of a person's being.