Flow on, forever, in thy glorious robe
Of terror and of beauty. Yea, flow on
Unfathomed and resistless. God hath set
His rainbow on thy forehead: and the cloud
Mantled around thy feet. And He doth give
Thy voice of thunder power to speak of Him
Eternally--bidding the lip of man
Keep silence--and upon thine altar pour
Incense of awe-struck praise.
— Lydia Huntley Sigourney
Niagara