Garlic & Sapphires--a profound title?

So, at this point in the book, we've finally gotten a clue about where the title ("garlic and sapphires") comes from. The question is....does it make any sense even when we do know where it comes from?

Click here to see the phrase in its original context--a poem by T.S. Eliot called "Burnt Norton". "Burnt Norton" is one of four poems which make up his famous (or infamous) Four Quartets. The line begins the second section.