The last written work of the Rebbe before his stroke centered on the following thought. The Rebbe personally handed a copy to thousands of people. I believe it is a summary of who we are and what we must do:

Self-sacrifice in a land of freedom penetrates to the bone.

I saw men and women who sacrificed all they had to defy the religious persecution of the Bolshevik regime. They came to a land of freedom and comfort—where is their greatness now?

Then there is the child of that land of freedom and comfort, worshipping it, chasing after it—but inside he is crushed by the spiritual void. His inner being does not let him alone, the spark inside that cries, “This is not what I truly want! I don’t want this world! I don’t want any worlds! All I want is Him alone!”

This is the crushing of an olive for its oil. The oil spreads and penetrates every fiber of his being. His every faculty begins to burn. And there shines the source of light that can never be extinguished nor dimmed.

It is the light from which the messianic era is formed.