You say, 'Hail, Wygrish'
As you approach Wygrish you can see him meditating with a small ripped book in his grasp. As you pass him by he raises his eyes and stares at you before going back into meditation.
If you're a monk currently working on Monk Epic 1.5 :
Wygrish says 'I see you wear the Celestial Mark! I know why you are here and you can't have it back! I will fight you with all that I am to prevent losing the diary!'
then 'Wygrish attacks.