This quote has a lot going on with it. I researched the the entire quoted paragraph and it seems that the quote is a mash-up of rememberable lines from the books. The line "Not all those who wander are lost", is a line from the poem "All that is gold does not glitter" by Tolkien for LOTR. The line "All we have to decide is what to do with the time that is given to us," is spoken by Gandalf in the Fellowship of the Ring. And the line, "There is some good in this world and it's worth fighting for," is Sam speaking to Frodo in the Two Towers. The last line is definitely not from Tolkien since it's most known for being said by Eleanor Roosevelt.