There may be other reasons for a man's not speaking in publick than want of resolution: he may have nothing to say.
Source: Quoted in: James Boswell, Life of Samuel Johnson, 5 April 1775 (1791).
-- Samuel Johnson, (Sep 18 1709-1784), English lexicographer, critic; He was remembered for writing the first critique of Shakespeare, 1765 and Dictionary of the English Language, 1755.