From the time Friedrich Hebbel arrived in Vienna in 1845 until his death there eighteen years later, he moved in the same literary and social milieu as Grillparzer. It is well known that a certain aloofness, amounting almost to hostility, existed between them. What, however, has not been fully explained, is the reason underlying it. While some sources state that these two great contemporary dramatists did not like one another as individuals, and others claim that they did not appreciate each other as writers, no one attempt has been made to evaluate all the factors involved. A recent doctoral dissertation does go into the relationship of Hebbel to Grillparzer, but not too fully. Robert B. Nance, its author, writes regarding Hebbel: “Personal feeling often played a large part in influencing his opinions of contemporary authors, particularly in the case of Gutzkow, Laube and Grillparzer, for this reason his relationship with these men has been sketched briefly.” Because the statements of friends and contemporaries are biased and often contradictory, Nance has used them as little as possible in arriving at Hebbel's real criticism. This is only too true. These very friends and contemporaries have, however, played an important part in coloring the evaluations of most scholars who studied the relationship of Hebbel and Grillparzer. Since Hebbel himself was biased and inconsistent in his attitude toward Grillparzer and since Grillparzer, too, expressed himself on numerous occasions about Hebbel, it is important to study all the existing sources to see to what extent they may be reconciled to support or refute any one explanation. This is the purpose of this article.