The Rational Corporeal Motions, being the purest, most free, and so most active, have great power over the Sensitive; as to perswade, or command them to obedience: As for example, When a man is studying about some Inventions of Poetical Fancies, or the like; though the Sensitive Corporeal Motions, in the Sensitive Organs, desire to desist from patterning of Objects, and would move towards sleep; yet the Rational will not suffer them, but causes them to work, viz. to write, or to read, or do some other Labour: Also, when the Rational Mind is merry, it will cause the Leggs to dance, the Organs of the Voice to sing, the Mouth to speak, to eat, to drink, and the like: If the Mind moves to sadness, it causes the Eyes to weep, the Lungs to sigh, the Mouth to speak words of Complaint. Thus the Rational Corporeal Motions of the Mind, will occasion the Senses to watch, to work, or to sport and play. But mistake me not; for I do not mean, the Senses are bound to obey the Rational Designs; for, the Sensitive Corporeal Motions, have as much freedom of Self-moving, as the Rational: for, the Command of the Rational, and the Obedience of the Sensitive, is rather an Agreement, than a Constraint: for, in many cases, the Sensitive will not agree, and so not obey: also, in many cases, the Rational submits to the Sensitive: also, the Rational sometimes will be irregular; and, on the other side, sometimes the Sensitive will be irregular, and the Rational regular; and sometimes both irregular. CHAP. XVII. Of Human Appetites and Passions. The Sensitive Appetites, and the Rational Passions do so resemble each other, as they would puzzle the most wise Philosopher to distinguish them; and there is not only a Resemblance, but, for the most part, a sympathetical Agreement between the Appetites, and the Passions; which strong conjunction, doth often occasion disturbances to the whole life of Man; with endless Desires, unsatiable Appetites, violent