A haiku is not a poem, it is not literature; it is a hand beckoning, a door half-opened, a mirror wiped clean. It is a way of returning to nature, to our moon nature, our cherry blossom nature, our falling leaf nature, in short, to our Buddha nature. It is a way in which the cold winter rain, the swallows of evening, even the very day in its hotness, and the length of the night, become truly alive, share in our humanity, speak their own silent and expressive language. – R. H. Blyth

Beautiful. Thanks Y.