A  is a dang'rous Thing;
Drink deep, or taste not the  Spring:
There  intoxicate the Brain,
And drinking  sobers us again.
Fir'd with the Charms fair  does impart,
In  we tempt the Heights of Art,
While from the bounded  of our Mind,
we take, nor see the ;
But  behold with strange Surprize
New, distant Scenes of  Science rise!
So pleas'd at first the towring  we try,
Mount o'er the Vales, and seem to tread the Sky,
Th'  appear already past,
And the first  and  seem the last:
But  we tremble to survey
The growing Labours of the lengthen'd Way,
Th'  Prospect tires our wandring Eyes,
Hills peep o'er Hills, and  on  arise!