I think the environmental problem will be the number one item on the agenda of the 21st century... This is a problem that cannot be postponed.

I think the biggest problem of the 21st century is how to deal with minorities.

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.

I think future generations will say the late 20th century and the early 21st century was a time of great convulsions and upheavals.