All waters that on earth most limpid are,
Would seem to have within themselves some mixture,
Compared with that, which nothing doth conceal,
Although it moves with a brown, brown current,
Under the shade perpetual, that never
Ray of sun let in, nor of the moon.
Translation of H. W. Longfellow. Dante Alighieri, 1265–1321.
NATURE TEACHING IMMORTALITY.
Nature, thy daughter, ever-changing birth
Of thee, the great Immutable, to man