“Much as Euclid proved that there can only ever be five 3d Platonic solids, over two millennia later Schafli proved that there are definitely only six Platonic solids in 4D.” — Matt Parker Copy Share Image
I was interviewed on the Israeli radio for five minutes and I said that more than 2000 years ago, Euclid proved that there are infinitely many primes. Immediately the host interrupted me and asked, 'Are there still infinitely many primes?' — Noga Alon Copy Share Image