Single Edged

Famous quotes containing the words single and/or edged:

“We know only a single science, the science of history. One can look at history from two sides and divide it into the history of nature and the history of men. However, the two sides are not to be divided off; as long as men exist the history of nature and the history of men are mutually conditioned.”
—Karl Marx (1818–1883)

“A tart temper never mellows with age, and a sharp tongue is the only edged tool that grows keener with constant use.”
—Washington Irving (1783–1859)