The language of human conduct in the face of real and immediate danger is cast over the Narcissist's anxiety. The paranoid seeks to alleviate his own voiding by irrationally clinging to rationality. This is the path that leads from the cloud of anxiety, through the lamp posts of worry to the consuming darkness of paranoia. Paranoia is a defence against anxiety and against aggression. The latter is projected outwards, upon imaginary others, the agents of one's crucifixion.
Anxiety is also a defence against aggressive impulses.
Therefore, anxiety and paranoia are sisters, the latter but a focused form of the former. The mentally disordered defend against their own aggressive propensities by either being anxious or by becoming paranoid. Yet, aggression has numerous guises, not only anxiety and paranoia. One of its favourite disguises is boredom. Like its relation, depression, boredom is aggression directed inwards.