Well, I see in the Empire Building something else – passionate skill, arduous and fearless idealism. The tallest building is a victory of imagination. Instead of crouching close to earth like a beast, the spirit of man soars to higher regions, and from this new point of vantage he looks upon the impossible with fortified courage and dreams yet more magnificent enterprises.
This is from Hellen Keller's letter saying what she saw on Empire State Building. I can't exactly understand what 'on the other bank' implies here.
I wonder what 'the impossible' refers to here. Is it the people with fortified courage and dreams yet more magnificent enterprises?