Fear can make a man either a coward or a bully. The coward identifies with his fear, while the bully projects his cowardice onto others, whom he then abuses.
Identifying with power creates a cruel and capricious man, intolerant of weakness — his love of power blinds him to his own vulnerability. He is in denial of his own weakness, and disdainful of the weakness of others.
Source: Border Crossings, Donald Lee Williams