Portrait of Cédric Villani. Photo Credit : Lydia Goldblatt.
Some of them definitely are...
Robert Bryant is a Top-Mathematicians, President of the American Mathematical Society, and a great supporter of the LGBT movement. His biography in the Notices of AMS is worth reading...
Claire Voisin is a Top-Mathematicians, Member of many Academy of Sciences, and first woman to enter the Collège de France. Besides she has 5 kids. When asked, she always mentionned the time-freedom that the CNRS institution gave her to organize her life, do Mathematics and raise her kids. Time-management, the key of efficiency...
Cédric Villani is a Top-Mathematician, winner of the Fields Medal, the Nobel Prize in Mathematics. He decided do become Deputy at the french National Assembly, and devote his time to improve life of many others.
Well, since the number of Mathematicians is exploding, and encounter a genius remains very rare, this can not be true...To have a better idea of the situation of Mathematicians in the world, it is helpfull to read the text "Mathematicians in France and in the world" by Jean-Pierre Bourguignon, Top-Geometrer and President of the European Research Council.
Portrait of Cédric Villani. Photo Credit : Lydia Goldblatt.
Some of them definitely are...