过去的危险是人们成为奴隶。未来的危险是人们可能成为机器人。
The danger of the past was that men became slaves. The danger of the future is that men may become robots.
世界是一切存在的总和。
Doubt is the artist’s most honest companion.
翻译：各种事情根据类别而聚集，万物根据类别而分为不同的群体。