Mary Shelley uses powerful language to emphasize Frankenstein's intense emotions at the moment of creating the monster. The line "With an anxiety that almost amounted to agony, I collected the instruments of life around me" shows his obsession and suggests his actions are dangerous. The alliteration of "anxiety" and "agony" makes the moment more dramatic. This foreshadows that Frankenstein's meddling with nature will have negative consequences, proving he should not have interfered in this way. The story is a warning about the dangers of scientific experimentation and mankind overreaching.