At the age by which most mathematicians had produced their most innovative work, he had no formal school qualifications and still was undecided about what subject he should study at university.
Sa edad na kung saan ang pinaka-mathematicians had produced kanilang mga pinaka-makabagong trabaho, siya ay walang pormal na paaralan at mga kwalipikasyon pa rin ay hindi tungkol sa kung ano ang paksa niya ay dapat mag-aral sa kolehiyo.