A mathematical theory is not to be considered complete until you have made it so clear that you can explain it to the first man whom you meet on the street.
-- David Hilbert
   
David Hilbert   Name:
David Hilbert
Type:
Mathematician
Nationality:
German
Birth:
January 23, 1862
Death:
February 14, 1943
https://www.nutquote.com/quote/David_Hilbert