The Creature says that he is the most solitary being on Earth What evidence does he cite to support this claim?

From the text:

I admired virtue and good feelings and loved the gentle manners and amiable qualities of my cottagers, but I was shut out from intercourse with them, except through means which I obtained by stealth, when I was unseen and unknown, and which rather increased than satisfied the desire I had of becoming one among my fellows.

‘But where were my friends and relations? No father had watched my infant days, no mother had blessed me with smiles and caresses; or if they had, all my past life was now a blot, a blind vacancy in which I distinguished nothing. From my earliest remembrance I had been as I then was in height and proportion. I had never yet seen a being resembling me or who claimed any intercourse with me. What was I? The question again recurred, to be answered only with groans.

God, in pity, made man beautiful and alluring, after his own image; but my form is a filthy type of yours, more horrid even from the very resemblance. Satan had his companions, fellow devils, to admire and encourage him, but I am solitary and abhorred.

‘When night came I quitted my retreat and wandered in the wood; and now, no longer restrained by the fear of discovery, I gave vent to my anguish in fearful howlings. I was like a wild beast that had broken the toils, destroying the objects that obstructed me and ranging through the wood with a staglike swiftness. Oh! What a miserable night I passed!