"It's a rare gift which sets Irving Berlin apart from all other contemporary songwriters. It is a gift which qualifies him, along with Stephen Foster, Walt Whitman, Vachel Lindsay and Carl Sandburg, as a great American minstrel. He has caught and immortalized in his songs what we say, what we think about, and what we believe."
- Douglas Moore
- Jerome Kern
"I want to say at once that I frankly believe that Irving Berlin is the greatest songwriter that has ever lived.... His songs are exquisite cameos of perfection, and each one of them is as beautiful as its neighbor. Irving Berlin remains, I think, America's Schubert. But apart from his genuine talent for song-writing, Irving Berlin has had a greater influence upon American music than any other one man. It was Irving Berlin who was the very first to have created a real, inherent American music.... Irving Berlin was the first to free the American song from the nauseating sentimentality which had previously characterized it, and by introducing and perfecting ragtime he had actually given us the first germ of an American musical idiom; he had sown the first seeds of an American music."
- George Gershwin