What passage in the poem seems to you to be the deepest, most serious expression of the speaker’s grief? Why?
It is completely within the realm of possibility that the entire poem represents the speaker's intense grief at the loss of Lenore and the raven is actually a chronic and omnipotent symbol of this grief. The intensity of the speaker's grief, while evident throughout the poem, is strongly reflected in lines 93 and 94 in which the speaker asks the raven if it can bring back Lenore from the dead. In line 106-108, one hears mention of a "shadow" being cast over his life with the loss of Lenore and with the raven's repetition of the single word "nevermore", it is apparent the shadow will remain over the life of the speaker for its remainder. The raven is the symbol of this shadow and the grief it entails.