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...