In the context of The Odyssey, the excerpt that best demonstrates the importance of loyalty in Greek society is the one that reflects the recognition and joy of Odysseus' loyal companion, the dog Argos. The lines you provided touch on various themes, but the moment when Argos is described as wagging his tail upon hearing Odysseus’ voice symbolizes the deep loyalty that the dog held for his master, despite having been neglected during Odysseus' long absence. This scene illustrates the idea that loyalty is highly valued in Greek culture, as evidenced by Argos’ faithfulness even into his old age and impending death.
Thus, while none of the specific excerpts provided fully capture this moment, the essence of loyalty can be found in the broader context of Argos’ reaction to Odysseus’ return, highlighting the significance placed on fidelity and loyalty.