One's life has value so long as one attributes value to the life of others.

Meaning doesn't come from a sealed room. Beauvoir suggests that the worth of your own life is tied to the worth you grant to other people's lives. If you treat others as disposable, as background figures or tools, you quietly drain your own existence of the reasons that make it matter. Valuing others keeps your life anchored in something larger than yourself.

This rests on her existentialist view that we are free, but that freedom is not a private possession. In her ethics, my freedom only becomes meaningful when it reaches toward the freedom of others. The line is often linked to her reflections on old age, where she criticized societies that treat the elderly as burdens. How we regard the vulnerable reveals what we think life is worth, our own included.

In everyday terms, imagine someone who is busy and tired but still phones an elderly neighbor each week, or listens fully to a colleague instead of treating them as an obstacle. Such small acts of attention affirm that other lives matter, and in doing so they make one's own feel worth living.