 The idea that Grimm wished to deprive Rask of his claims to priority is based on the fact that he does not expressly mention Rask's results in his second edition, but it was always his plan to refrain from all controversy or reference to the works of others.In his first edition, he calls attention to Rask's essay, and praises it ungrudgingly.Nevertheless, a certain bitterness of feeling afterwards sprang up between Grimm and Rask, after Rask refused to consider the value of Grimm's views when they clashed with his own.