and is in itself very agreeable, like every thing, which inlivens the mind to a moderate degree. But tho' surprise be agreeable in itself, yet as it puts the spirits in agitation, it not only augments our agreeable affections, but also our painful, according to the foregoing principle. Hence every thing, that is new, is most affecting, and gives us either more pleasure or pain, than what, strictly speaking, should naturally follow from it. When it often returns upon us, the novelty wears off; the passions subside; the hurry of the spirits is over; and we survey the object with greater tranquillity.
9. The imagination and affections have a close union together. The vivacity of the former, gives force to the latter. Hence the prospect of any pleasure, with which we are acquainted, affects us more than any other pleasure, which we may own superior, but of whose nature we are wholly ignorant. Of the one we can form a particular and determinate idea: The other, we conceive under the general notion of pleasure.
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