"To be a writer is to sit down at one's desk in the chill portion of every day, and to write; not waiting for the little jet of the blue flame of genius to start from the breastbone."

事实上，自然科学长期以来只是大脑和想象力的产物：现在是时候回归到对物质和显而易见事物的朴素而健全的观察了。

我不愿意人家粗心大意地读我的书，因为在这些记忆记下来时，我承受了太多太多的悲伤。