Good haiku set you thinking as well as feeling. Not only world but worldview slips inside the flash of momentary perception. That constellations of comprehension so large can be held in a vessel so small is the atomic-fissive potential of very short poems, and one reason they are both astonishing and illimitable. The almost inconceivable immensity of what haiku are able to evoke in us when they are read with full attention is part of what gives them their type-specific power. Another by Issa: