Feeding the world will be one of the greatest challenges of the 21st century. It will be impossible without using scientific advancements and biotechnology.

The 21st century simply means open century.

The great challenge of the twenty-first century is to raise people everywhere to a decent standard of living while preserving as much of the rest of life as possible.

It's important to move the theatre into the 21st Century.

'The New World Haggadah' is meant for American Jews in the 21st century.

Twitter is the samizdat of the 21st Century.