My uncle was a very prominent mathematician, and he told me, "Look, there's a problem which I could not solve 25 years ago, and which nobody can solve.
Mans onkulis bija ļoti ievērojams matemātiķis, un viņš man teica: "Skat, te ir problēma, kuru nevarēju atrisināt pirms 25 gadiem un kuru neviens nevar atrisināt.