Quote of the day
Love doesn't just sit there, like a stone, it has to be made, like bread; remade all the time, made new.
Joan Birman

Born: May 30, 1927 (age 99)
Bio: Joan Sylvia Lyttle Birman is an American mathematician, specializing in braid theory and knot theory. Her book Braids, Links, and Mapping Class Groups has become a standard introduction, with many of today's researchers having learned the subject through it.






