David Hilbert Quotes about Math
"Hilbert". Book by Constance Reid, 1970.
Quoted in Howard Eves, Mathematical Circles Revisited (1971)
"Mathematical Circles Squared : A Third Collection of Mathematical Stories and Anecdotes" by Howard Whitley Eves, (p. 125), 1972.
The infinite! No other question has ever moved so profoundly the spirit of man.
"Über das Unendliche" ["On the Infinite"] (1925) address to der Westfälischen Mathematischen Gesellschaft in honour to the memory of Karl Weierstrass, as quoted in "Number The Language of Science" by Tobias Dantzig, 1930.