Probably there is not one here who has not in the course of the day had occasion to set in motion a complex train of reasoning, of the very same kind, though differing in degree, as that which a scientific man goes through in tracing the causes of natural phenomena.
在座的各位,大概不会有人一整天都没有机会进行一连串复杂的思考活动,这些思考活动与科学家在探索自然现象原因时所进行的思考活动,尽管复杂程度不同,但在类型上是完全一样的。