It was clear to Frankenstein that his creature was far from being physically attractive and would be seen as a hideous, grotesque monster; it was at this point that he ran from what he created. Because his creation was not what he intended on the outside Victor never gave the creature a chance to see if he was human on the inside.
The monster's humanity can be characterized by his ability to learn and use language. Progressing through the novel, the monster does become more likeable, not to mention we are able to understand him me as he learns to communicate through speaking. It is easy to see that despite his unpleasant appearance, he can be a warm and endearing individual, at least at first. He shows us through his personality that he does care for others, he longs for acceptance and he desires a family. It is later in the novel that we witness the monsters first conversations with Victor, and his first conversation with the Old DeLacey. When he is first separated from Victor, the monster knew no language and didn't speak. It was through watching and listening to the DeLacey's, specifically through Felix teaching Safie, that he learned to speak French, possibly later English. He then taught himself to read; he discovered three books, one by Milton, one by Goethe, and one by Plutarch. These three books subjected him to a different aspect of human life, and gave him a better grasp on language than he already had. All the more so when the monster is speaking in a confident manner to Victor he remains well-spoken and his behavior towards Victor remains calm. This alone should be enough to suggest that the monster is indeed human. .
The first review of Frankenstein by Percy Shelley, husband of Mary Shelley, suggests that there is a morality and humanity to the store with a primary focus on one quote; "Treat a person ill, and he will become wicked," [ CITATION She13 l 1033 ].