"Those island backwaters were silent places. Even the birds and insects seemed to be silent in that steaming heat. There were only the tall trees, and the tangled undergrowth, and the aspiring creeper, and the naked tree roots along the banks. It seemed as if the African Queen's clanking progress was the first sound ever to be heard there, and when that sound stilled, when they anchored to collect more fuel, Rose found herself speaking in whispers until she shook over the crushing influence of the silence."
(The African Queen by C. S. Forester, Chapter 3, page 59-60)