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DISSERTATION II.
In general, we may observe, that both these principles operate on the will; and where they are contrary, that either of them prevails, according to the general character or present disposition of the person. What we call strength of mind implies the prevalence of the calm passions above the violent; tho' we may easily observe, that there is no person so constantly possest of this virtue, as never, on any occasion, to yield to the sollicitation of violent affections and desires. From these variations of temper proceeds the great difficulty of deciding concerning the future actions and resolutions of men, where there is any contrariety of motives and passions.
SECT.