Final Fantasy XII?

I am suppose to be headed to Giruvegan. I am at The Feywood and I have come to a temple like thing that you touch to read some words that say: " In this sanctum shall the pilgrim find truth and illusion both. illusion betokens the true way." What does this mean? When I went on it just took me back to this temple like thing. What am I suppose to do? Someone help me!