相濡以沫,不如相忘于江湖。
Rather than moistening each other with foam, it is better to forget each other in the rivers and lakes.
Plain meaningSometimes the kinder choice is to let each other go and live freely.
Zhuangzi
Original context and translation note
The full passage describes fish stranded when a spring dries up. The line is about freedom from a desperate condition, not casual indifference.
English wording on Gu Ren Said is an original reading aid, not a claim that there is only one valid literary translation.