"Significantly he [Kelly] developed productive relationships [in Paris, circa 1949] with Alexander Calder (a friendship that continued for years after their return to the United States), Jean Arp (who showed in his studio in Meudon his and Sophie Täuber-Arp’s early works to Kelly, thereby providing his 'first introduction to fragmented forms according to the laws of chance'), and John Cage (who likewise encouraged Kelly’s pursuit of serendipitous aesthetic strategies)."