I found this beautiful stoic thought in L'Orfeo by Claudio Monteverdi. Orpheus has lost Eurydice. He despairs. The chorus of spirits sings,

Orfeo vinse l’Inferno, e vinto poi
Fù da gli affetti suoi.
Degno d’eterna gloria
Fia sol colui ch’avrà di sè vittoria.

Two versions of Il Ritorno di Ulisse in Patria, by Monteverdi. Most uninspiring. Later today, I found the version by Nikolaus Harnoncourt which I love. Art imitates life.