From "Roughing It", Mark Twain on Lake Tahoe:
"We were on the north shore. There, the rocks on the bottom are sometimes gray, sometimes white. This gives the marvelous transparency of the water a fuller advantage than it has elsewhere on the lake. We usually pushed out a hundred yards or so from shore, and then lay down on the thwarts, in the sun, and let the boat drift by the hour whither it would. We seldom talked. It interrupted the Sabbath stillness, and marred the dreams the luxurious rest and indolence brought."