In revenge however, my memory of the past has closed the door against me more and more.I could have returned at first had human beings allowed it, through an archway as wide as the span of the heavens over the earth, but as I spurred myself on in my forced career, the opening narrowed and shrank behind me; the strong wind that blew after me out of my past began to slacken. Today it is only a gentle puff of air that plays around my heels; and the opening through which it comes and through which I once came myself, has grown so small that, even if my strength and will power sufficed to get me back to it, I should have to scrape the very skin from my body to crawl through.

- Kafka