"Le pessimisme est un luxe qu'un Juif ne peut jamais s'autoriser."

Simplified Meaning:

The statement means that for Jewish people, being negative or expecting the worst is not an option they can afford. This is because throughout history, Jewish communities have faced many hardships and challenges. If they allowed themselves to be continually negative, it would be much harder to survive and thrive. For example, think about a time when you faced a tough situation, like losing a job. If you only focused on the bad aspects, it would be very hard to find a new job because you’d be stuck in a mindset of failure. Instead, many Jewish people have learned to focus on hope and finding solutions, no matter how tough things get. Someone can use this lesson in their own life by trying to stay hopeful even when things are difficult. Instead of giving up, they would keep looking for ways to solve their problems and move forward. By doing this, they create more opportunities for positive outcomes.