Ground Proximity Warning

Famous quotes containing the words ground, proximity and/or warning:

“Let us unite on the safe and sure ground of fact and experiment, and we can never err; yet better, we can never differ.”
—Frances Wright (1795–1852)

“Our senses perceive no extreme. Too much sound deafens us; too much light dazzles us; too great distance or proximity hinders our view. Too great length and too great brevity of discourse tends to obscurity; too much truth is paralyzing.... In short, extremes are for us as though they were not, and we are not within their notice. They escape us, or we them.”
—Blaise Pascal (1623–1662)

“By day thy warning ringing bell to sound its notes,
By night thy silent signal lamps to swing.”
—Walt Whitman (1819–1892)