When would you use "nil" and when would you use "ni"?
Oversimplfying it a lot: if you're using two nouns, you use ní. If you're doing a noun and an adjectives/something else, use níl
So in this case, are "duine" and "e" the two nouns?
"He is not a positive person.", in irish is this taken to mean he is miserable person or that he is a bad influence?
It could be understood as either that he’s pessimistic or that he’s maleficent.