The life of the dead resides in the memory of the living

[Vita enim mortuorum in memoria est posita vivorum.]

Marcus Tullius Cicero (106-43 BC) Roman orator, statesman, philosopher

Philippics [Philippicae; Antonian Orations], No. 9, ch. 5 / sec. 10 (9.5/9.10) (43-02-04 BC) [tr. Zetzel (2009)]
    (Source)

Calling on the Senate to memorialize Servius Sulpicius Rufus, who died during the Senate-sponsored embassy to Mark Antony in Mutina.

(Source (Latin)). Other translations:

The life of the dead is placed in the memory of the living.
[ed. Hoyt (1896)]

For the life of the dead consists in the recollection cherished of them by the living.
[tr. Yonge (1903)]

The dead live in the memory of the living.
[ed. Harbottle (1906)]

For the life of the dead is set in the memory of the living.
[tr. Ker (Loeb) (1926)]

For the life of the dead lies in the memory of the living.
[tr. Manuwald (2007)]