Perhaps even:

Everything carries on and bears fruit.

Yes, I agree, keep it simple, don´t consult the thesaurus. But maybe stays works better?

Ich würde "abide" in Betracht ziehen. AWWDI ;-)

erster Treffer: Siehe Wörterbuch: abide

Ich sage nur: "The Dude abides" ;-)

Mir gefällt im Zusammenhang mit Worten und Gedanken einem Grabstein 'remains' eigentlich am besten...

alles was an Vergangenes erinnert

I think JayVienna's point was that the word "remains" might make one think of "sterbliche Überreste".

Two further possibilities: "survives" or "lives on"?

Fwiw, and of course this doesn’t make it any the less apt or dignified, it is apparently an existing G. epitaph. Helen Wilkes in The Aging of Aquarius: Igniting Passion and Purpose as an Elder (2018), n.p., attributes it to a gravestone in a cemetery in “a small town in Germany” and translates it—

Keine Tat, Kein Wort, Kein Gedanke, Geht Verloren.

Alles Bleibt Und Trägt Früchte.

No act, no word, no thought is ever lost.

Everything endures and bears fruit.