Speaking of quotes, dpolicar made reference to one from the Narnia books.

[randomness]

He can't remember the exact phrasing, and I can't find it on the web, so I'm giving crowdsourcing it a try.

At one point, the lion says something along the lines of "It is not given for mortals to know the outcome of the path we did not take."

Anyone know what the actual quote is?

Thanks in advance!