t consequently possess
trains both of waking and sleeping ideas. Surprise must
therefore be strongly excited at its nativity, as those
trains of ideas must instantly be dissevered by the sudden
and violent sensations occasioned by the dry and cold
atmosphere, the hardness of external bodies, light, sound,
and odours; which are accompanied with pleasure or pain
according to their quantity or intensity.

As some of these sensations become familiar by repetition,
other objects not previously attended to present themselves,
and produce the idea of novelty, which is a less degree of
surprise, and like that is not perceived in our dreams,
though for another reason; because in sleep we possess no
voluntary power to compare our trains of ideas with our
previous knowledge of nature, and do not therefore perceive
their difference by intuitive analogy from what usually
occurs.

As the novelty of our ideas is generally attended with
pleasurable sensation, from this arises Curiosity, or a
desire of examining a variety of objects, hoping to find
novelty, and the pleasure consequent to this degree of
surprise; see Additional Note VII. 3.]

[Footnote: _And meeting lips_, l. 152. Young children put
small bodies into their mouths, when they are satiated with
food, as well as when they are hungry, not with design to
taste them, but use their lips as an organ of touch to
distinguish the shape of them. Puppies, whose toes are
terminated with nails, and who do not much use their forefeet
as hands, seem to have no other means of acquiring a
knowledge of the forms of external bodies, and are therefore
perpetually playing with things by taking them between their
lips.]

III. "As the pure language of the Sight commands
The clear ideas furnish'd by the hands;
Beauty's fine forms attract our wondering eyes,
And soft alarms the pausing heart surprise.
Warm from its cell the tender infant born
Feels the cold chill of Life's aerial morn;
Seeks with spread hands the bosoms velvet orbs,
With closing lips the milky fount absorbs; 170
And, as compress'd the dulcet streams distil,
Drinks warmth and fragrance from the living rill;