I thank my God for graciously granting me the opportunity of learning that death is the key which unlocks the door to our true happiness.

The sentiment expresses a distinctly Christian (and especially Catholic) consolation: death is not merely an end but a passage into a truer, lasting happiness. Read this way, the speaker frames mortality as a divine gift of understanding—an acquired spiritual insight that transforms fear into gratitude. In quotation culture, the line is often used to portray Mozart as serenely reconciled to death, aligning with later Romantic images of the composer as otherworldly and prematurely doomed. Even if the attribution is uncertain, the idea resonates with late‑18th‑century devotional language in which earthly life is preparatory and death “unlocks” eternal joy.