A very sweet, reclusive, and beyond-brilliant physicist whose merest scribble on a cocktail napkin has become the basis for science fiction books worldwide.  Also, father of EstherDyson.  Best known for his theoretical creation, the DysonSphere.

MichaelAtiyah tells a cool story comfirming the subtle, important influence of FreemanDyson on science in the West as part of his eulogy on RogerPenrose in TheGeometricUniverse, now quoted on WhyClublet in StunningInItsSimplicity.