Victor Frankenstein is not capable of being a true friend because he desires to live in isolation.
He chooses the goal of creating life over his family and the society.
Friends are an essential ingredient to live a prosperous social life.
In the novel Frankenstein Shelley expresses the worth of friendship through Henry Clerval’s self-sacrificing support for Victor.
It is better to have an enemy than an insidious friend.
Victor does not have the capacity to be a true friend because he alienates himself, he is selfish, and he does not trust anyone, even his family.
He prefers to live in isolation rather than with his family.
Victor risks the lives of his companions in order to protect himself.
In other words, they do not have much time to socialize with other friends of their own.
In contrast, not everyone can be a friend of others.