Rabbi Lord Jonathan Sacks offered modern arguments defending an ancient faith

A typical Rabbi Lord Jonathan Sacks speech would open with a self-deprecating jab at long-winded rabbis and then flow into a blend of Hebrew texts, science, law, literature, current events and the scriptures other faiths.

When the former chief rabbi of the United Kingdom died on Nov. 7 at age 72, after battles with cancer that began in his 30s, the Prince of Wales said: "His immense learning spanned the secular and the sacred, and his prophetic voice spoke to our greatest challenges with unfailing insight and boundless compassion. His wise counsel was sought and appreciated by those of all faiths and none."

Most of all, Lord Sacks was known for using modern information and insights to defend ancient truths. One famous address, at a 2014 Vatican conference on marriage, began with fish mating in a Scottish lake 385 million years ago before charting humanity's rise from polygamy to monogamy, including some awkward biblical dramas.

Before this speech ended with a standing ovation, the rabbi explained that his goal was to defend the “most beautiful idea in the history of civilization," the concept of love as the origin of new life.

"What made the traditional family remarkable, a work of high religious art, is what it brought together: sexual drive, physical desire, friendship, companionship, emotional kinship and love, the begetting of children and their protection and care, their early education and induction into an identity and a history," he explained.

“Seldom has any institution woven together so many different drives and desires. … It made sense of the world and gave it a human face -- the face of love. For a whole variety of reasons, some to do with medical developments like birth control, in vitro fertilization and other genetic interventions, some to do with moral change like the idea that we are free to do whatever we like so long as it does not harm others, some to do with a transfer of responsibilities from the individual to the state … almost everything that marriage once brought together has now been split apart. Sex has been divorced from love, love from commitment, marriage from having children and having children from responsibility for their care."

Lord Sacks was part of the Modern Orthodox movement and wrote two dozen prayer books and works about science and spirituality, as well serving as a commentator on BBC Four's "Thought for the Day." He became chief rabbi of the United Hebrew Congregations of the Commonwealth in 1991, holding that post until 2013, Queen Elizabeth knighted him in 2005 and he entered the House of Lords in 2009.

Rabbi Lord Sacks: Religious believers face harrowing choices in these tense times

As long as there have been chase scenes -- think Keystone Kops or Indiana Jones -- movie heroes have been caught straddling danger while trying to get from one vehicle to another.

Inevitably, the road splits and the hero has to make a decision.

Religious believers now face a similar challenge after decades of bitter conflict in the postmodern world, said Rabbi Lord Jonathan Sacks, in a recent lecture at the Chautauqua Institution in southwestern New York State.

For a long time, "we were able to have our feet in society and our head in religion, or the other way around. … But today the two cars are diverging and they can't be held together any longer," said Sacks, who was knighted by Queen Elizabeth in 2005 and made a life peer in the House of Lords.

It's an agonizing dilemma that reminded the rabbi of a classic Woody Allen quote: "More than any other time in history, mankind faces a crossroads. One path leads to despair and utter hopelessness; the other to total extinction. Let us pray we have the wisdom to choose correctly."

Truth is, there's no way to escape the Internet, which Sacks called the greatest economic, political and social revolution since the invention of the printing press.

"I sum it up in a single phrase -- cultural climate change," said Sacks, who from 1991-2013 led the United Hebrew Congregations of the Commonwealth. "It's not so much a matter of more religion or less religion, because the truth is that both are happening at once. … The result is a series of storms in the West and even more elsewhere in the Middle East, in Asia and Africa."

For four centuries, European and American elites wrongly assumed the world would get more and more secular.