372. (1) All the constituents of the mind are connected with the will and intellect, and all the constituents of the body with the heart and lungs. By the mind we mean nothing else than the will and intellect, which comprise in their entirety all that a person feels and all that a person thinks, thus all elements that pertain to a person's affection and thought. The things that a person feels are properties of his will, and those that he thinks are properties of his intellect. People know that all the components of a person's thought are properties of his intellect, since a person thinks with the intellect. But it is not so well known that all the components of a person's affection are properties of his will. It is not so well known for the reason that when a person thinks, he does not pay attention to his affection, but only to what he is thinking. Similarly, when he hears someone speaking, he does not pay attention to the intonation but to the utterance itself. And yet the affection in thinking is like the intonation in speech, which is why from the intonation of a speaker one discerns his affection, and from the utterance his thought. [2] Affection is a property of the will because every affection is a property of love, and the recipient vessel of love is the will, as we showed above. A person who does not know that affection is a property of the will confuses affection with thought; for he says that it is one with thought. But in fact they are not one, but operate as one. The confusion of the two is apparent from common speech, as in the statement, "My thought is to do this," meaning, "My will is to do it." On the other hand, the distinction of the two is also apparent from common speech, as in the statement, "I want to think about this." And when he does think about it, the affection of the will is present in the thought of the intellect, like the intonation in an utterance, as we said. People know that all the constituents of the body are connected with the heart and lungs, but they have not known that there is a correspondence of the heart and lungs with the will and intellect. Therefore we will consider this point in the discussions that follow.