For self-preservation, a
manDefinition of man: Homo sapiens sapiens. A higher mammal of the biological order of primates. Able to reason according to the label.
goodDefinition of good: A relative term for the things, states, activities and attitudes that are conducive to human life.
friendsDefinition of friend: Someone to which you have a relationship based on mutual affection. It is characterized by trust and familiarity.
enemiesDefinition of enemy: An adversary. In contrast to the opponent, who is an adversary in the case of sporty, playful, or legal issues, an enemy is linked to a (also physical) mutual threat.
, as the former instruct him about his flaws and the latter attack him about them.