“Anger is stupid, and stupidity will kill you more surely than your opponent's blade.”

Source: In the Hand of the Goddess

329
1940s–present, Minority Report : H.L. Mencken's Notebooks (1956)
Context: My old suggestion that public offices be filled by drawing lots, as a jury box is filled, was probably more intelligent than I suspected. It has been criticized on the ground that selecting a man at random would probably produce some extremely bad State governors. [... ] But I incline to believe that it would be best to choose members of the Legislature quite at random. No matter how stupid they were, they could not be more stupid than the average legislator under the present system. Certainly, they'd be measurably more honest, taking one with another. Finally, there would be the great advantage that all of them had got their jobs unwillingly, and were eager, not to spin out their sessions endlessly, but to get home as soon as possible.

and they ask me into their deserted house [probably Miro meant the group 'Abstraction-Création', founded by a. o. Jean Arp and André Breton; both coined Miro's art in 1931 as 'mobile' and 'stabile'] as if the marks I put on a canvas did not correspond to a concrete representation of my mind, did not possess a profound reality, were not a part of the real itself.
1930s
Source: 'Où allez-vous Miró?', art critic Georges Duthuit in Cahiers d'Art 261, nos. 8-10, 1936

On José Mourinho, (November 2005) http://news.bbc.co.uk/sport2/hi/football/teams/a/arsenal/4398238.stm
Context: He's out of order, disconnected with reality and disrespectful. When you give success to stupid people, it makes them more stupid sometimes and not more intelligent.

Source: In the Hand of the Goddess

Pastwatch: The Redemption of Christopher Columbus (1996)

Source: A Walk in the Woods (1997), Chapter 8 (p. 106)