Poetry combines two very important elements that were joined together in one powerful statement made by Ezra Pound, -"...an intellectual and emotional complex in an instant of time." The language of the poetic writings exercise origins of observation and images. Literary images that describe a story, a fact or a blurb discuss some related images and are the heart of successful creative writing.
Where the images come from? The short answer is, "from observation." It could be just one person's opinion, believe, or state-of-mind. Attention to details are making the poems concrete, real, perhaps, tangible. Objects in words give the rare opportunity to "dream" the images threw as experiences.