— George Gamow Russian-American physicist and science writer 1904 - 1968
Context: There was a young fellow from Trinity, Who took the square root of infinity. But the number of digits, Gave him the fidgets; He dropped Math and took up Divinity. One, Two, Three... Infinity (1947)
— Terry Pratchett English author 1948 - 2015
Men at Arms
„The Hindus introduced negative numbers... The first known use is about 628; he also states the rules for the four operations with negative numbers. Bhāskara points out that the square root of a positive number is twofold, positive and negative. He brings up the matter of the square root of a negative number but says that there is no square root because a negative number is not a square. No definitions, axioms, or theorems are given.
The Hindus did not unreservedly accept negative numbers. Even Bhāskara, while giving 50 and -5 as two solutions of a problem, says, "The second value is in this case not to be taken, for it is inadequate; people do not approve of negative solutions." However, negative numbers gained acceptance slowly.“
— Morris Kline American mathematician 1908 - 1992
— Georges St. Pierre Canadian mixed martial artist 1981
After fight with Sean Sherk at UFC 56, pleading for a rematch with Hughes.
„When I cover the square surface with rectangles, it lightens the weight of the square. Destroys its power.“
— Agnes Martin American artist 1912 - 2004
as quoted by Lucy R. Lippard, in 'Hommage to the Square', Art in America, July-August 1967, p. 55 This quote is one of the most frequently quoted statements of Agnes Martin. A later variation by her: 'The rectangle is pleasant, whereas the square is not'; Agnes Martin is than 89 - quoted in A House Divided: American Art Since 1955, Anne M. G. Wagner Univ. of California Press 2012, p. 263
— Katrina Pierson Political spokesperson 1976
In an email to '. http://www.huffingtonpost.com/entry/donald-trump-katrina-pierson-lgbt_us_57a214dae4b0104052a09c00 (August 3, 2016)
— Cressida Cowell, How to Speak Dragonese
— Fenella Fielding English actress 1927 - 2018
Her recollections of her father's cinema
„I taught myself decimals, equations, the square, cube, and biquadrate roots. I got some knowledge of logarithms, and some of algebra. I readily got through a small schoolbook of geometry; and having an odd volume, the first, of Williamson's ' Euclid,' I attacked it vigorously and perseveringly. Williamson's is by no means the best book on the subject, yet I am still of opinion that it is the best book I could have had for the purpose of teaching myself.“
— Francis Place English social reformer 1771 - 1854
„In love with whole numbers, the Pythagoreans believed that all things could be derived from them. Certainly all other numbers.
So a crisis in doctrine occurred when they discovered that the square root of two was irrational.“
— Carl Sagan American astrophysicist, cosmologist, author and science educator 1934 - 1996
Context: There can be an infinite number of polygons, but only five regular solids. Four of the solids were associated with earth, fire, air and water. The cube for example represented earth. These four elements, they thought, make up terrestrial matter. So the fifth solid they mystically associated with the Cosmos. Perhaps it was the substance of the heavens. This fifth solid was called the dodecahedron. Its faces are pentagons, twelve of them. Knowledge of the dodecahedron was considered too dangerous for the public. Ordinary people were to be kept ignorant of the dodecahedron. In love with whole numbers, the Pythagoreans believed that all things could be derived from them. Certainly all other numbers. So a crisis in doctrine occurred when they discovered that the square root of two was irrational. That is: the square root of two could not be represented as the ratio of two whole numbers, no matter how big they were. "Irrational" originally meant only that. That you can't express a number as a ratio. But for the Pythagoreans it came to mean something else, something threatening, a hint that their world view might not make sense, the other meaning of "irrational". 37 min 45 sec