To defend a country, you need an army, but to defend a civilization, you need education...

I believe faith is not certainty but the courage to live with uncertainty.

Science will explain how but not why. It talks about what is, not what ought to be. Science is descriptive, not prescriptive; it can tell us about causes but it cannot tell us about purposes. Indeed, science disavows purposes.

We know – it has been measured in many experiments – that children with strong impulse control grow to be better adjusted, more dependable, achieve higher grades in school and college and have more success in their careers than others. Success depends on the ability to delay gratification, which is precisely what a consumerist culture undermines. At every stage, the emphasis is on the instant gratification of instinct. In the words of the pop group Queen, “I want it all and I want it now.” A whole culture is being infantilised.

Yom HaShoah is a vital day in the Jewish calendar, providing us with a focal point for our remembrance. We cannot bring the dead back to life, but we can bring their memory back to life and ensure they are not forgotten. We can undertake in our lives to do what they were so cruelly prevented from doing in theirs.

Freedom is not won by merely overthrowing a tyrannical ruler or an oppressive regime. That is usually only the prelude to a new tyranny, a new oppression.

While we can remember the past, we cannot write the future. Only our children, the future of our community, can do that.