Mark Twain,
Life on the Mississippi — Chapter 1
(1883)
“ The Mississippi was left unvisited by whites during a term of years which seems incredible in our energetic days. One may 'sense' the interval to his mind, after a fashion, by dividing it up in this way: After De Soto glimpsed the river, a fraction short of a quarter of a century elapsed, and then Shakespeare was born; lived a trifle more than half a century, then died; and when he had been in his grave considerably more than half a century, the SECOND white man saw the Mississippi. In our day we don't allow a hundred and thirty years to elapse between glimpses of a marvel. ”
