I'm currently reading "A Vision" by W. B. Yeats and he quotes Heraclitus, among other Greek philosophers, frequently throughout the text. However, there's one quote I really love and I wondered where I could find it in Heraclitus' work so that I could have some context, or at least be able to find it in it's original Greek. The quote is "Here the thought of Heraclitus dominates all: 'Dying each other's life, living each other's death'."
The original is quoted by the anti-pope Hippolytus in his Refutation of All Heresies 9.10, and appears as fragment B 62 in the standard Diels & Kranz edition:
ἀθάνατοι θνητοί, θνητοὶ ἀθάνατοι, ζῶντες τὸν ἐκείνων θάνατον, τὸν δὲ ἐκείνων βίον τεθνεῶτες.
The full quotation means, literally,
Immortals are mortal, mortals immortal: living the others' death, dying the others' life.
or possibly (grammatically more sound, but seems to make even less sense):
Mortals are immortal, immortals mortal: living the others' death, dying the others' life.