| Quote #1
The season's ill – (line 13)
This doesn't exactly scream, "my mind's not right!" but it's the first major sign of our speaker projecting his mental illness on the state of the town.
| Quote #2
One dark night,
The speaker is going into the dark, dreary place in his memory.
| Quote #3
My mind's not right. (line 30)
Here's the hard evidence. He admits to feeling off.