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Menno van der pijll

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Leon Battista Alberti

Born 18 Feb 1404; died 25 Apr 1472 at age 68. Italian artist and geometrist who “wrote the book,” the first general treatise Della Pictura (1434) on the the laws of perspective, establishing the science of projective geometry. Alberti also worked on maps (again involving his skill at geometrical mappings) and he collaborated with Toscanelli who supplied Columbus with the maps for his first voyage. He also wrote the first book on cryptography which contains the first example of a frequency table.

An Englishman, a Scotsman, and...

An Englishman, a Scotsman, and an Irishman are all to give speeches to the Deaf Society. All are keen to make an impression on their audience.
The Englishman goes first and to the surprise of his colleagues starts by rubbing first his chest and then his groin.
When he finishes the Scotsman and Irishman ask him what he was doing. "Well," he explained, "by rubbing my chest I indicated breasts and thus Ladies and by rubbing my groin I indicated balls and thus Gentlemen. So my speech started 'Ladies and Gentlemen'".
On his way up to the podium the Scotsman thought to himself "I'll go one better than that English bastard", and started his speech by making an antler symbol with his fingers above his head before also rubbing his chest and his groin.
When he finished his colleagues asked what he was doing. "Well," he explained, "by imitating antlers and then rubbing my chest and groin I was starting my speech by saying 'Dear Ladies and Gentlemen'".
On his way up to the podium the Irishman thought to himself "I'll go one further than those mainland bastards", and started his speech by making an antler symbol above his head, rubbing his chest, and then his groin, and then masturbating furiously.
When he finished his colleagues asked him what he was doing. "Well," he explained, "by imitating antlers, rubbing my chest and then my groin and then masturbating I was starting my speech by saying 'Deer Ladies and Gentlemen, it gives me great pleasure...'"
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