Famous quotes containing the words unknown, unquiet and/or grave:
“The process of discovery is very simple. An unwearied and systematic application of known laws to nature causes the unknown to reveal themselves.”
—Henry David Thoreau (1817–1862)
“But where is laid the sailor John
That so many lands had known,
Quiet lands or unquiet seas
Where the Indians trade or Japanese?
He never found his rest ashore,
Moping for one voyage more.”
—William Butler Yeats (1865–1939)
“I suppose you think that persons who are as old as your father and myself are always thinking about very grave things, but I know that we are meditating the same old themes that we did when we were ten years old, only we go more gravely about it.”
—Henry David Thoreau (1817–1862)