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Paul A. Samuelson (born May 15, 1915) is an
American economist known for his work in many
fields of economics.  He was awarded the John
Bates Clark Medal in 1947 and The Bank of Sweden
Prize in Economic Sciences  in 1970.

He earned a bachelor's degree from the University
of Chicago in 1935 and a Doctor of
Philosophy|Ph.D. from Harvard University in 1941.

As professor of economics at the Massachusetts
Institute of Technology, he has worked in fields
including:
*Welfare economics, in which he popularised the
Lindahl-Bowen-Samuelson conditions which are
criteria for deciding whether an action will
improve welfare;
*Public finance theory, in which he is
particularly known for his work on determining the
optimal allocation of resources in the presence of
both public goods and private goods.
*International economics, where he influenced the
development of two important international trade
models: the Balassa-Samuelson effect, and the
Heckscher-Ohlin model (with the Stolper-Samuelson
theorem). 

He was also the author of an influential economics
textbook, Economics, first published in 1948, and
revised regularly for the following fifty years.

Stanislaw Ulam once challenged Samuelson to name
one theory in all of the social sciences which is
both true and nontrivial. Several years later,
Samuelson responded with David Ricardo's theory of
Comparative advantage. 

Along with Kenneth Arrow, he is considered one of
the founders of modern neoclassical economics. 
The following is an excerpt from the reasons for
awarding Samuelson the Nobel Prize:

: Generally speaking, Samuelson's contribution has
been that, more than any other contemporary
economist, he has contributed to raising the
general analytical and methodological level in
economic science. He has in fact simply rewritten
considerable parts of economic theory. He has also
shown the fundamental unity of both the problems
and analytical techniques in economics, partly by
a systematic application of the methodology of
maximization for a broad set of problems. This
means that Samuelson's contributions range over a
large number of different fields.

==See also==

*Neo-classical economics
*List of economists

==External links==
*http://www.nobel-winners.com/Economics/paul_samue
lson.html Paul Samuelson, short Biography
*http://www.nobel.se/economics/laureates/1970/pres
s.html 1970 Press Release, Nobel Prize in
Economics
*http://cepa.newschool.edu/het/profiles/samuelson.
htm A History of Economic Thought biography
*http://www.nobel.se/economics/laureates/1970/samu
elson-bio.html Biography at the Nobel e-Museum
*http://cepa.newschool.edu/het/profiles/samuelson.
htm Profile, Including a list of major works
*http://www.geocities.com/gfh_axds_as/zax/samuelso
n-bio-press.html the scientific work through which
he has developed static and dynamic economic
theory and actively contributed to raising the
level of analysis in economic science.