Euclid Quotes (8 quotes)
Elements, Book 7, Definitions 11
Elementa Book 1, proposition 5. Latin translation from Greek, often abbreviated QED.
As quoted in: Commentary on the First Book of Euclid's Elementa, Proclus
“In right-angled triangles the square on the side opposite the right angle equals the sum of the squares on the sides containing the right angle.”
Elementa Book 1, proposition 47
“The most important things to say are those which often I did not think necessary for me to say - because they were too obvious.”
Entry for August 23, 1926, Journal
“Laughter, n. An interior convulsion, producing a distortion of the features and accompanied by inarticulate noises. It is infectious and, though intermittent, incurable.”
The Devil's Dictionary (1911)
A New Slant on Life (1998)
If you know some quotes that would be a good fit here, send us a note!
Picture Source: Wikimedia CommonsEuclid
Bio: Euclid, fl. 300 BC, also known as Euclid of Alexandria, was a Greek mathematician, often referred to as the Father of Geometry. He was active in Alexandria during the reign of Ptolemy I. His Elements is one of the most influential works in the history of mathematics, serving as the main textbook for teaching mathematics from the time of its publication until the late 19th or early 20th century.
Quote of the day
“This survival of the fittest which I have here sought to express in mechanical terms, is that which Mr. Darwin has called 'natural selection, or the preservation of favored races in the struggle for life.”