Armies of fact, that pointed all one way,
And yet—what vera causa could he find
In blindfold Nature?
Even had he found it,
What æons would be needed! Earth was old;
But could the unresting loom of infinite time
Weave this wild miracle, or evolve one nerve
Of all this intricate network in the brain,
This exquisite machine that looked through heaven,
Revelled in colours of a sunset sky,