Since the old man was blind, what was it about the creature that made him trust him? What does this say about the creature?

He decides to speak to the senior De Lacey at a time when the other cottagers are away. The old man, who is blind, will be better able to appreciate the mellifluousness of his speech and the genuine goodwill in his heart; the young people, by contrast, would be horrified at the very sight of him. He hopes to gain their trust by first gaining that of their respected elder. The creature is very aware of how others will perceive him. He is also aware of his goodness and hopes that the blind man might "see" this. at last summons all of his courage and knocks upon the De Laceys' door. After a fraught silence, the creature bares his soul to the old man: he tells him that he is a wretched outcast, and that the De Laceys are his only friends in all the world. De Lacey is astonished, but Safie, Felix, and Agatha burst into the cottage before he can reply to the creature's entreaty.