If you know someone who tries to drown their sorrows, you might tell them sorrows know how to swim.

The line is a wry warning against using alcohol or other numbing habits to “drown” grief. By personifying sorrows as capable swimmers, it suggests that pain is not eliminated by escapism; it persists and often resurfaces stronger once the temporary relief fades. The quip also implies a practical ethic of coping: sorrow must be faced, processed, and integrated rather than suppressed. In the context of a romantic-drama narrative like *P.S. I Love You*, the sentiment aligns with themes of bereavement and recovery—acknowledging that loss cannot be erased, only carried differently over time.