There is a person who sings the song of his soul. He finds everything, his complete spiritual satisfaction, within his soul. There is a person who sings the song of the nation. He steps forward from his private soul, which he finds narrow and uncivilized. He yearns for the heights. He clings with a sensitive love to the entirety of the Jewish nation and sings its song.
There is a person whose soul is so broad that it expands beyond the border of Israel. It sings the song of humanity. This soul constantly grows broader with the exalted totality of humanity and its glorious image. He yearns for humanity's general enlightenment. He looks forward to its supernal perfection.
And there is a person who rises even higher until he unites with all existence, with all creatures, and with all worlds. And with all of them, he sings.
Orot Hakodesh II, p. 444