So it was something that would symbolize some tranquility, peace—anything that would give it a good energy.
Martha hoped that “from this moment [they] would grow old together, in solitude and tranquility.”
Rapture was self-transcending, which led to quiescence, tranquility, and catharsis.
also tranquillity, late 14c., from Old French tranquilite (12c.), from Latin tranquillitatem (nominative tranquillitas) "tranquilness," from tranquillus "tranquil," perhaps from trans- "over" (here in its intensive sense of "exceedingly") + a root related to quies "rest" (see quiet (n.)).