When Niels Bohr complained that he did not know how to finish a sentence in a scientific article he was writing, Dirac replied, "I was taught at school never to start a sentence without knowing the end of it."
Cando Niels Bohr se queixaba de que non sabía como acabar unha determinada frase nun artigo científico, Dirac replicoulle: "A min ensináronme na escola que nunca se debe empezar unha frase sen saber o final da mesma".