What is the theme in this excerpt from Mary Shelley’s Frankenstein?
My affection for my guest increases every day. He excites at once my admiration and my pity to an astonishing degree. How can I see so noble a creature destroyed by misery without feeling the most poignant grief? He is so gentle, yet so wise; his mind is so cultivated, and when he speaks, although his words are culled with the choicest art, yet they flow with rapidity and unparalleled eloquence. He is now much recovered from his illness and is continually on the deck, apparently watching for the sledge that preceded his own. Yet, although unhappy, he is not so utterly occupied by his own misery but that he interests himself deeply in the projects of others. He has frequently conversed with me on mine, which I have communicated to him without disguise. He entered attentively into all my arguments in favour of my eventual success and into every minute detail of the measures I had taken to secure it. I was easily led by the sympathy which he evinced to use the language of my heart, to give utterance to the burning ardour of my soul and to say, with all the fervour that warmed me, how gladly I would sacrifice my fortune, my existence, my every hope, to the furtherance of my enterprise. One man's life or death were but a small price to pay for the acquirement of the knowledge which I sought, for the dominion I should acquire and transmit over the elemental foes of our race.

A.
The end result is more important than how it is achieved.
B.
Forgiveness is necessary.
C.
One person’s misery is greater than the misery of the world.
D.
No goal justifies the loss of life.