Existence in its entirety is expressed in the phrase, "there is no other than He.”
All meaning–within the creation and being of man–depends on the fact that man has a connection with God Who speaks to him.
Man has a way of connecting to and joining the Oneness of God, Who is "One and Unique."
For indeed "there is no other than He.”
–Rabbi Adin Steinsaltz
From Learning from the Tanya, Chapter 20, by Rabbi Adin Steinsaltz