And, as we venture for uncertain gains,
Perhaps the profit is not worth the pains.
When Bruce, the dauntless traveller, thought he stood
On Nile's first rise, the fountain of the flood,
And drank exulting in the sacred spring,
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The critics told him, it was no such thing;
That springs unnumber'd round the country ran,
But none could show him where they first began:
So might we feel, should we our time bestow