What is rolling stone?

Famous quotes containing the words rolling and/or stone:

    “He says the waves in the ship’s wake
    are like stones rolling away.
    I don’t see it that way.”
    —Denise Levertov (b. 1923)

    ““That rough tooth of the sea,” Kineo, great source of arrows and of spears to the ancients, when weapons of stone were used.”
    —Henry David Thoreau (1817–1862)