Pulse Interval

Famous quotes containing the words pulse and/or interval:

“Oh Science, lift aloud thy voice that stills
The pulse of fear,”
—Lucretius (Titus Lucretius Carus)

“I was interested to see how a pioneer lived on this side of the country. His life is in some respects more adventurous than that of his brother in the West; for he contends with winter as well as the wilderness, and there is a greater interval of time at least between him and the army which is to follow. Here immigration is a tide which may ebb when it has swept away the pines; there it is not a tide, but an inundation, and roads and other improvements come steadily rushing after.”
—Henry David Thoreau (1817–1862)