How we cite our quotes: Act.Line
Quote #1
PILKINGS: What the hell is the matter with you man!
JANE: Your costume darling. Our fancy dress. (2.9-10)
Pilkings is responding to Amusa's reaction at seeing the Pilkingses dressed in egungun attire. Although these costumes have some heavy-duty spiritual significance for the Yoruba (so much so that even Amusa, a Muslim, is scared), Simon and Jane just treat them as dress-up clothes and nothing more—and they can't really understand why anyone else would have a problem with that.
Quote #2
Oh Amusa, what is there to be scared of in the costume? You saw it confiscated last month from those egungun men who were creating trouble in town. You helped arrest the cult leaders yourself—if the juju didn't harm you at the time how could it possibly harm you now? And merely by looking at it? (2.24)
Jane thinks that Amusa's fear is unreasonable, given that he has converted to Islam (and therefore shouldn't believe that the costumes have any real power) and since he arrested the men who originally owned the costumes, which seems a lot more potentially dangerous, "juju"-wise than seeing two British folks in egungun-wear. So she basically tells him not to feel the way he feels because it's not rational… because that kind of reasoning always works on people. Not.
Quote #3
It is native law and custom. The King die last month. Tonight is his burial. But before they can bury him, the Elesin must die so as to accompany him to heaven. (2.68)
Joseph provides some key plot exposition for us when he gives the Pilkingses the down low on the ceremony Elesin will engage in and why. Since they are British (and don't seem super curious about the intricacies of Yoruba culture), they were not previously aware of the ritual.