The scholarship enabled Kalecki to travel with his wife to Sweden, where followers of Knut Wicksell were trying to formalize a theory similar to Kalecki's. In Sweden in 1936 he learnt of the publication of Keynes's "General Theory". Kalecki was working on a comprehensive elaboration of the economic ideas he had previously developed, but having found in Keynes's book much of what he was going to say, he interrupted his work and traveled to England. He first visited the London School of Economics and afterward went to Cambridge. Thus began his friendships with Richard Kahn, Joan Robinson and Piero Sraffa, which left an indelible mark on all of them. In 1937 Kalecki met Keynes. The meeting was cool and Keynes kept aloof. Although the conclusions they had reached in their work were very similar, their characters could not have been more different. Kalecki graciously neglected to mention that he had a priority of publication. As Joan Robinson stated: