On Xenophanes: Diog. Laert. 8.36
“What [Xenophanes] says about Pythagoras goes like this:
People say that one day, when he was passing by as a puppy was being beaten, he pitied him and uttered this line: ‘Stop, don’t beat him, in truth, his is a soul of a dear friend of mine, one I recognized when I heard him cry.”
ὃ δὲ περὶ αὐτοῦ φησιν οὕτως ἔχει·
καί ποτέ μιν στυφελιζομένου σκύλακος παριόντα φασὶν ἐποικτῖραι καὶ τόδε φάσθαι ἔπος·“παῦσαι, μηδὲ ῥάπιζ᾿,ἐπεὶ ἦ φίλου ἀνέρος ἐστὶν ψυχή, τὴν ἔγνων φθεγξαμένης ἀϊών.”
καὶ ταῦτα μὲν ὁ Ξενοφάνης.