I believe, with sustained efforts of people of all countries, the world civilization is sure to progress, and the humanity's well-being is certain to improve.

我相信，在各国人民的持续努力，对世界文明进步的肯定，以及人类的福祉，肯定会改善。

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The OECD describes its mission as to "promote policies that will improve the economic and social well-being of people around the world" and "provides a forum in which governments can work together to share experiences and seek solutions to common problems".

BBC: OECD asked by Leighton Andrews for Wales education review