<span>to sacrifice self-interest for the common good</span>
When talking about recycling, people don't seem to consider the recycling of clothing.
The comma should be placed between the first use of recycling and people. The subordinate clause is "when talking about recycling". This is a clause because of the word "when". When makes the reader wonder when what? The main clause is "people don't seem to consider the recycling of clothing."
The symbolism of the new cloak in this excerpt is - the new cloak represents Odysseus's transformation from a weary traveler to the returning hero.
He spent many years on the sea, far from his family and loved ones, and he became old and tired. This new cloak is his transformation - he is a hero now, and he has come back to Ithaca to rule again.
Mangoes is the plural of mango