The biggest Influence in my youth was William Blake...i felt like was being infused with his soul and even today i would like think that i write with the same spirit as Him in a more contemporary idiom though i do write a lot of Haikus...there is one verse that i think sums-up Blake it is:
To see a world in a grain of sand
And hold Infinity in the palm of your hand;
To see beauty in a wild flower
And Eternity in an Hour.
How close is this verse to the spirit of the Haiku? but less succinct of course...more...