One wishes to go on. On this great river one could glide forever — and here we discover the definition of bliss, salvation, Heaven, all the old Mediterranean dreams: a journey from wonder to wonder, drifting through eternity into ever-deeper, always changing grandeur, through beauty continually surpassing itself: the ultimate Homeric voyage.

On the Colorado River, in Down the River with Major Powell, p. 201 - The Journey Home (1977)