I write to you on Christmas Eve 2014 after reminding myself and colleagues that you are now missing for more than two years.
Your disappearance has muted for many of your friends the joy of the season.
The past year has brought to the front many of the concerns about sustainable development that you had devoted much of your work towards addressing.
The continuing efforts of many people around the World to address your concerns, which have become universal, has sorely missed your gentle wisdom and leadership.
We all look forward to your safe return.
Our warm wishes for Peace to you, Shui Meng and all our Friends at PADETC.