And in this striving, this converting air
Into a solid he may grasp and use,
Finds progress, man's distinctive mark alone,
Not God's, and not the beasts': God is, they are,
Man partly is and wholly hopes to be.
Such progress could no more attend his soul
Were all it struggles after found at first
And guesses changed to knowledge absolute,
Than motion wait his body, were all else
Than it the solid earth on every side,