Famous quotes containing the words signal and/or source:
“By day thy warning ringing bell to sound its notes,
By night thy silent signal lamps to swing.”
—Walt Whitman (1819–1892)
“You have never by a word or a deed given me one moment’s uneasiness; on the contrary I have felt perpetual gratitude to heaven for having given me, in you, a source of so much pure and unmixed happiness.”
—Thomas Jefferson (1743–1826)