In "A Spark of Light" by Jodi Picoult, the author emphasizes the complexity of making policies influenced by religion, noting that interpretations of faith vary widely among individuals. This diversity makes it challenging to formulate laws based on religious beliefs, as they may not reflect a universal consensus. Instead, Picoult advocates for grounding policies in scientific principles, particularly regarding reproduction, where the biological process is a fact that transcends personal belief systems.

The narrative suggests that while individuals are entitled to ascribe their own ethical values to reproductive issues based on their spiritual views, public policies governing human rights should not be subject to personal interpretation. Instead, these policies should be based on objective scientific understanding, ensuring consistent and fair treatment regarding reproductive rights for all individuals, irrespective of their religious backgrounds.