Famous quotes containing the words sharpening and/or stones:
“Of course politics is an interesting and engrossing thing. It offers no immutable laws, nearly always prevaricates, but as far as blather and sharpening the mind go, it provides inexhaustible material.”
—Anton Pavlovich Chekhov (1860–1904)
“Use the stones of another hill to polish your own jade.”
—Chinese proverb.