Quote 1
The innocent and helpless creature bestowed on them by heaven, whom to bring up to good, and whose future lot it was in their hands to direct to happiness or misery, according as they fulfilled their duties towards me. (1.6)
When Victor talks about his childhood, he suggests that parents play a big role in how their kids turn out, either "to happiness or misery." Sure, blame it on your folks. Everyone else does.
Quote 2
I feel exquisite pleasure in dwelling on the recollections of childhood, before misfortune had tainted my mind and changed its bright visions of extensive usefulness into gloomy and narrow reflections upon self. Besides, in drawing the picture of my early days, I also record those events which led, by insensible steps, to my after tale of misery, for when I would account to myself for the birth of that passion which afterwards ruled my destiny I find it arise, like a mountain river, from ignoble and almost forgotten sources; but, swelling as it proceeded, it became the torrent which, in its course, has swept away all my hopes and joys. Natural philosophy is the genius that has regulated my fate; I desire, therefore, in this narration, to state those facts which led to my predilection for that science. When I was thirteen year of age we all went on a party of pleasure to the baths near Thonon; the inclemency of the weather obliged us to remain a day confined to the inn. In this house I chanced to find a volume of the works of Cornelius Agrippa. I opened it with apathy; the theory which he attempts to demonstrate and the wonderful facts which he relates soon changed this feeling into enthusiasm. A new light seemed to dawn upon my mind, and bounding with joy, I communicated my discovery to my father. My father looked carelessly at the title page of my book and said, "Ah! Cornelius Agrippa! My dear Victor, do not waste your time upon this; it is sad trash." (2.6)
Victor learns that his interest in alchemy is useless and that such a field is outdated. Instead, science and natural philosophy are the accepted forms of thought.
Quote 3
Everyone loved Elizabeth. The passionate and almost reverential attachment with which all regarded her became, while I shared it, my pride and my delight. On the evening previous to her being brought to my home, my mother had said playfully, "I have a pretty present for my Victor--tomorrow he shall have it." And when, on the morrow, she presented Elizabeth to me as her promised gift, I, with childish seriousness, interpreted her words literally and looked upon Elizabeth as mine--mine to protect, love, and cherish. All praises bestowed on her I received as made to a possession of my own. We called each other familiarly by the name of cousin. No word, no expression could body forth the kind of relation in which she stood to me--my more than sister, since till death she was to be mine only. (1.7)
Victor sees that Elizabeth’s beauty is the reason people love her. Yet this seems to be the reason he loves her himself.