Stan Ulam was lazy, ... He talked too much ... He was self-centered ... . He had an overpowering personality.
Gian-Carlo RotaThe apex of mathematical achievement occurs when two or more fields which were thought to be entirely unrelated turn out to be closely intertwined. Mathematicians have never decided whether they should feel excited or upset by such events.
Gian-Carlo RotaIt is a common public relations gimmick to give the entire credit for the solution of famous problems to the one mathematician who is responsible for the last step.
Gian-Carlo RotaEvery field has its taboos. In algebraic geometry the taboos are (1) writing a draft that can be followed by anyone but two or three of one's closest friends, (2) claiming that a result has applications, (3) mentioning the word 'combinatorial,' and (4) claiming that algebraic geometry existed before Grothendieck (only some handwaving references to 'the Italians' are allowed provided they are not supported by specific references).
Gian-Carlo Rota