The knowledge of the past stays with us to spur us on to new and better things.

"Memory is a strange thing. It doesn't work like I thought it did. We are so used to thinking of it as a camera or a tape recorder, but it's not like that at all. It's more like a painter. It creates a picture, but it's not always the same picture."

自然系统的当前状态显然是前一时刻的结果，如果我们设想一个智能体在某一瞬间理解了这个宇宙中所有实体的关系，它就能陈述这些实体在过去或未来的任何时间的各自位置、运动和一般效应。

可持续性不是一种趋势，而是我们对工匠、森林和下一代的责任。

His soul swooned slowly as he heard the snow falling faintly through the universe and faintly falling, like the descent of their last end, upon all the living and the dead.