What are three great sentences of importance other than mahavakyas?

1.         Brahma Satyam Jagan Mithya Jivo Brahmaiva Na Aparah means - Brahman only exists truly, the world is false, and the individual soul is Brahman only and no other.

2.         Ekam evadvitiyam brahma means Brahman is one, without a second (There is one absolute reality, without any secondary parts)

3.         Sarvam khalvidam brahma means all of this is brahman