"The one exclusive sign of thorough knowledge is the power of teaching."
On this day: October 18
- 1565 – The first recorded naval battle between Europeans and the Japanese occurred when a flotilla of samurai attacked two Portuguese trade vessels at the Battle of Fukuda Bay in Nagasaki.
- 1748 – The War of the Austrian Succession ended with the signing of the Treaty of Aix-la-Chapelle.
- 1873 – Renton defeated Kilmarnock 2–0 in the opening match of the inaugural Scottish Cup.
- 1968 – At the Summer Olympics in Mexico City, American athlete Bob Beamon (pictured) achieved a distance of 8.90 m (29.2 ft) in the long jump event, setting a world record that stood for 23 years.
- John FitzWalter, 2nd Baron FitzWalter (d. 1361)
- Mehmet Esat Bülkat (b. 1862)
- Maria Antonescu (d. 1964)
- Bess Truman (d. 1982)
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