Sustainable Development is defined as "meeting the needs of the present generation without compromising the ability of the future generations to meet their own needs."

 -  The World Commission on Environment 
and Development, 1987

"Its essence is in the harmonious integration of a sound and viable economy, responsible governance, social cohesion/harmony and ecological integrity to ensure that development is a life-enhancing process.  The ultimate aim of development is human development now and through future generations."

-  Philippine Agenda 21