In view of the fact that we have defined perceptions, sensations, and images by their physiological causation, it is evident that our problem of the analysis of the emotions is bound up with the problem of their physiological causation.

鉴于我们已经通过生理因果关系来定义知觉、感觉和意象这一事实，很明显，我们对情绪的分析问题与它们的生理因果关系问题密切相关。