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.

Robert Browning (1812-1890): A Death in the Desert.

From Helicon's harmonious springs

A thousand rills their mazy progress take.

Thomas Gray (1716-1771): The Progress of Poesy. I. 1, Line 3.