We continue to shape our personality all our life. If we knew ourselves perfectly, we should die.

The remark links being alive with being unfinished. Camus suggests that personality is not a fixed essence to be discovered once and for all, but an ongoing formation shaped by choices, experiences, and confrontation with the world. “Knowing ourselves perfectly” would imply a closed account—no remaining ambiguity, no further becoming, no new moral or existential work to do. In that sense, complete self-knowledge would coincide with stasis, and stasis with death. The line fits Camus’s broader resistance to final answers: lucidity is valuable, but human meaning remains provisional, made and remade in time rather than possessed as a completed truth.