Had I right, for my own benefit, to inflict this curse upon everlasting generations?
I had before been moved by the sophisms of the being I had created; I had been struck senseless by his fiendish threats; but now, for the first time, the wickedness of my promise burst upon me; I shuddered to think that future ages might curse me as their pest, whose selfishness had not hesitated to buy its own peace at the price, perhaps, of the existence of the whole human race.
I trembled and my heart failed within me, when, on looking up, I saw by the light of the moon the daemon at the casement.

A ghastly grin wrinkled his lips as he gazed on me, where I sat fulfilling the task which he had allotted to me.

Yes, he had followed me in my travels; he had loitered in forests, hid himself in caves, or taken refuge in wide and desert heaths; and he now came to mark my progress and claim the fulfilment of my promise.
As I looked on him, his countenance expressed the utmost extent of malice and treachery.

I thought with a sensation of madness on my promise of creating another like to him, and trembling with passion, tore to pieces the thing on which I was engaged.

The wretch saw me destroy the creature on whose future existence he depended for happiness, and with a howl of devilish despair and revenge, withdrew.
I left the room, and locking the door, made a solemn vow in my own heart never to resume my labours; and then, with trembling steps, I sought my own apartment.