After Victor has abandoned his creature, the creature spends some time observing the DeLacey family and learning language from them. Once he has done so, he is able to read Plutarch's Lives, The Sorrows of Werther, and Paradise Lost , along with Victor's journal, in which the creature...
After Victor has abandoned his creature, the creature spends some time observing the DeLacey family and learning language from them. Once he has done so, he is able to read Plutarch's Lives, The Sorrows of Werther, and Paradise Lost, along with Victor's journal, in which the creature reads about his creation and Victor's feelings of horror at his work. Each of these texts has an impact on the creature and helps form his characteristics and motives.
Plutarch's Lives is a text about great figures of the ancient world. This teaches the creature what makes a man significant and what honorable qualities are valued by the society around him. Remember that the creature has had no education from his creator and is left alone to discover what he can about the world into which he has been thrust. The creature aspires to these heights he reads about in the Lives, and as we can see from his narration, he is not inherently evil and does want to be good.
The Sorrows of Werther is a sentimental novel, so it allows the creature to tap into his emotional side and to learn empathy. This is important because it shows us that the creature has feelings and can be affected greatly by the emotions of others. Again, he is not evil and is actually a tender-hearted being.
Paradise Lost is the one of these texts that has the most significant impact on the creature. He reads the story of God's creation of Adam and contrasts it with his experience with Victor, his creator. He feels more like Satan than like Adam, and this is a direct result of Victor's abandonment of and disgust with his creature. From the poem, the creature also learns the story of Adam and Eve, and this (along with his observation of the DeLacey clan) plants the idea in his mind that he could be happy if he had a female partner. He appeals to Victor to grant this wish, and Victor at first agrees but then goes back on his promise and destroys what he had completed of the female creature.
Frankenstein's journal is not listed in your question, but it is a fourth text that influences the creature greatly. He could have read the other texts with some sense of optimism if it hadn't been for what he learned about his creation and Victor's true feelings in the journal. However, he still thinks Victor can be won over if he can appeal to Victor's sympathy. Ultimately, the journal and Victor's destruction of the female creature combine to motivate the creature to take his revenge on Victor.