If you were smart enough to earn a Ph.D. in math, you should be able to learn how to program, once you overcome a possible psychological block. More important, let’s make sure that our grad students are top-notch programmers, since very soon, being a good programmer will be a prerequisite to being a good mathematician.
-- Doron Zeilberger - (see also)
Possibly useful career advice, but not a rationality quote.