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∂MEM Douglas Murray↓U.S. China Relations↓Building 160↓Room 162$$
Ma Xiwen and Tang Chih-sung∞
The one Chinese scholar with whom I am concerned is Ma Xiwen.  My
invitation called for no charges of any kind and no payment by us to him.
Stanford also incurred no costs concerned with housing or his English.
The work he has done in his short time here is outstanding, and therefore
I consider it appropriate to continue that arrangement as long as he wants
to stay.  In fact we usually but not always pay outside people making his
level of contribution to our research.  My impression is that he is
exceptional, and I don't have the same impression of Mr. Tung Yun-mei,
here as one of the six.  Besides that I have invited Dr. Tang Chih-sung
from the Institute of Computing Machines on an arrangement in which we
will pay travel and living expenses.  We have heard indirectly that he
expects to be able to accept our invitation.  Both Donald Knuth and I have
an extremely good impression of Dr. Tang and consider the invitation not
especially generous.

I believe that the arrangement we made with Ma
and the arrangement we propose with Tang are appropriate considering
the contributions these scientists will probably make.
It seems to me that some of the other scholars are here under a kind 
pump-priming arrangement, and that this was justified, but should be
replaced by the same kinds of individual arrangements we make with people from
other countries as soon as this is feasible.

Should there be any problems in our continuing our arrangement with
Ma or establishing one with Tang, please let me know.  As I understand
your memo, there won't be any.

.sgn
cc: E. Feigenbaum, D. Knuth