Manic:
-I have superpowers
-I should move to Europe and make a living off of my novels
-The universe is all conscious
-I can talk to dead people and inanimate objects (since everything is sentient)
-I'm a genius (yeah, right! )

Depressed:
-my brain is rotting
-I'm dying of cancer
-I'm dumber than non-human animals
-I'm subhuman

Not sure how many of them cross the line between "strange ideation" and "delusion"...anyway, it keeps life interesting!