text: Furthermore, an intermittent noise upsets me more than a steady one. But by this time I have toughened my nerves against all that sort of thing, so that I can endure even a boatswain marking the time in high-pitched tones for his crew. For I force my mind to concentrate, and keep it from straying to
  things outside itself; all outdoors may be bedlam, provided that there is no disturbance within, provided that fear is not wrangling with desire in my breast, provided that meanness and lavishness are not at odds, one harassing the other. For of what benefit is a quiet neighbourhood, if our emotions are in an uproar?