As late as 1940, Bhabha was listing his affiliation as "at present at the Department of Physics, Indian Institute of Science, Bangalore", suggesting that he viewed his time in India as a temporary period before his return to the UK. In 1941, he wrote to Robert Millikan that he hoped that the war would be over soon, so that "we can all turn again in more favourable conditions to purely scientific activity". Though he had hoped to work in Caltech, it was impossible for Millikan to invite him there. The restrictions on finance imposed by the war also made it impossible for Wolfgang Pauli to invite Bhabha to Princeton.