Faith is not a certainty. Faith is the courage to live with uncertainty. - Jonathan Sacks

One of the most important distinctions I have learned in the course of reflection on Jewish history is the difference between optimism and hope. Optimism is the belief that things will get better. Hope is the faith that, together, we can make things better. Optimism is a passive virtue, hope an active one. It takes no courage to be an optimist, but it takes a great deal of courage to have hope. Knowing what we do of our past, no Jew can be an optimist. But Jews have never – despite a history of sometimes awesome suffering – given up hope. Not by accident did they call the national anthem of their new state Hatikvah, meaning, the hope.

Judaism is the refusal to give way to despair.

[T]oday there is hardly a country in the world, certainly not a single country in Europe, where Jews feel safe.
A society, or for that matter, a political party, that tolerates antisemitism, that tolerates any hate, has forfeited all moral credibility.