The artist (I suppose) usually pays for the privilege by some sort of partial insomnia, by the possession of one faculty that will not be controlled nor put to sleep. In a poet this must often be the visual imagination, bringing before his eyes a succession of images which he never summoned, and of which some (it is only too likely) will be ugly or pitiful.
All of us,' he said, 'have hopes of being poet, artist, discoverer, philospoher, scientist; of possessing the attributes of all these simultaneously. Few are permitted to achieve any of them in daily life. But in travel we attain them all. Then we have our day of glory, when all our dreams come true, when we can be anything we like, as long as we like, and, when we are tired of it, pull up stakes and move on. Travel -- the solitude of the mountains, the emptiness of the desert, the delicacy of the minaret; eternal change, limitless contrast, unending variety.' (Eric Lang)