It is therefore senseless to think of complaining since nothing foreign has decided what we feel, what we live, or what we are.

The sentence expresses a core Sartrean claim: our lived experience is not ultimately determined by an external essence, fate, or “foreign” power that fixes what we are. If nothing outside us decides our feelings, life, or identity, then complaint becomes a form of bad faith—an attempt to shift responsibility onto circumstances, society, or nature. The thought pushes toward existential responsibility: even when we cannot choose our situation, we remain answerable for how we interpret it, what projects we pursue, and what we make of ourselves. The line also implies a critique of victimhood as a metaphysical stance, urging lucidity about freedom and self-creation.