I don't think of poetry as a 'rational' activity but as an aural one. My poems usually begin with words or phrases which appeal more because of their sound than their meaning, and the movement and phrasing of a poem are very important to me.
Other quotes by Margaret Atwood
Fiction is not necessarily about what you know, it's about how you feel. That is the truth about fiction, and the other truth is that all science is a tool, and we use our tools not to actualise what we know, but to implement how we feel.