### „Euclid taught me that without assumptions there is no proof. Therefore, in any argument, examine the assumptions.“

— Eric Temple Bell mathematician and science fiction author born in Scotland who lived in the United States for most of his life 1883 - 1960

Context: Euclid taught me that without assumptions there is no proof. Therefore, in any argument, examine the assumptions. Then, in the alleged proof, be alert for inexplicit assumptions. Euclid's notorious oversights drove this lesson home.
Mathematics Magazine, Vol. 23-24. (1949), p. 161