Evolution has been observed. It’s just that it hasn’t been observed while it’s happening. — Richard Dawkins
Leadership is one of the most observed and least understood phenomena on earth. — James MacGregor Burns
By this means (fractional reserve banking) government may secretly and unobserved, confiscate — John Maynard Keynes
I have observed that in comedies the best actor plays the droll, — Henry St John, 1st Viscount Bolingbroke