Lo! as a little child

...Lo! as a little child
Looks from its window on a mighty town, 
And sees the roofs as far as eye can reach,
But thinks not, knows not—nay, will not believe­ 
That there are Fathers, Mothers, Sisters, Homes 
All like his own, a thousand homely talks,
Manners, and customs—so I saw the world
With millions of my brethren. Then I wrote; 
And all my verse sprang fire-new from a brain 
That loved it and believed it. But the world 
Coldly, in silence, passed my numbers by.
Therefore I sang in fury! When the years 
Brought with them coolness, all too late I found
There were ten thousand, thousand thoughts like mine!