Sentence:  It occurred to me that you might be interested in some thoughts which I expressed privately in recent years , in the hope of clearing up a certain confusion in the public <WSD>mind</WSD> about what foreign policy is all about and what it means , and of developing a certain compassion for those who are carrying such responsibilities inside Government . 
Meaning of the word marked with <WSD> tags:  that which is responsible for one's thoughts and feelings; the seat of the faculty of reason