And since sustainability is a journey, progress is essential.
There is ample precedent: the connection between catastrophe and progress is essential to the city's history.
He has long stressed that economic and political progress is essential for the military effort to stabilize Iraq.
He says its definition as a political philosophy is "based on belief in progress, the essential goodness of man and the autonomy of the individual, and standing for the protection of political and civil liberties".
The general lack of progress in essential services and good governance is now so broad that it ought to be clear that we no longer are moving the Iraqis "forward".
Inside the pamphlet, the 32-year-old chairman of the Old Comrades Associasion says that "in face of the wave of needless waste & extravagance now passing over the country, it is obvious that never was economy with progress more essential.
However, the row that has broken out about the 10p rate threatens to shift the focus away from poor children at just the time when progress is essential to meet the 2010 target for halving child poverty.
"We stand by the people and government of Greece as you put your country back on a path to economic stability and prosperity," Mrs. Clinton said, noting that such progress was essential for the United States, too.
Therefore, research on new approaches that allow automatic recognition of as-built performance and visualization of construction progress is essential.
Even with all the economic growth, lower debt, lower taxes, booming exports and strong currency, public sector debt is still 51% of GDP, so continued progress is essential.
