English translation here:
It appears from the so-called CRU-Mails that the cartel has sinned against a basic scientific principle namely the principle of transparency. Science should be practiced openly. All published results should in principle be verifiable, should be open to criticism, also to criticism from people who are not well-meaning. That is something a scientist must accept, that people who are not well-meaning scrutinize him.
The e-mails from CRU indicate that there have been attempts to keep people from publishing
by contacting authors or publishers, that one lead author of the IPPC has at the least expressed the thought of keeping certain persons out of the whole process and lastly, and possibly the worst, that the data on which their research is based has not been put into the open for verification. This is not acceptable.