716 ALVARADO
STANFORD, CALIF.

December 27, 1963

Dr. Harold C. Urey
7890 Torrey Lane
LaJolla, California

Dr. Polykarp Kusch
450 Riverside Drive
New York, New York

Dear Harold:
Dear Poly:

Over the past two years | have been hopefully waiting for Quadri-Science
to undertake some meaningful project that might accomplish my main aim

in joining the group: to join with you in some imaginative and useful
thinking that would take advantage of our diverse talents and backgrounds.
| am really sorry this has not happened = perhaps for reasons beyond
anyone's control. The financial prospects of Q/S$ are a secondary con-
sideration as far as | am concerned; but this private attitude may limit
my usefulness to you.

| would not place any great value on my services to Q/S, and in consider-
ation of an/amicable but full severance of our contractual association |
freely offer to forfeit any interest in or claim on the corporation that

| may now have. 1 would leave it entirely to you and the Board to consider
whether any alternative compensation is appropriate. .

Please make my resignation effective December 31, 1963; with that, none~
theless, my wishes to all of you for a happy and prosperous 1964,

Sincerely yours,

Joshua Lederberg