I would add, in no particular order,

Sir William Blackstone
Thomas Hobbes
John Locke
St. Thomas Aquinas
Lysander Spooner
*Murray Rothbard (including Man, Economy, and State )


*The reason I recommend Rothbard over Ludwig von Mises Human Action , is simply because both cover pretty much the same material and Rothbard's work is a whole lot easier to digest. Both works give you the equivalent of an undergraduate degree in economics.

This discussion could go on forever if we let it!

Incidentally, I just read this book and highly recommend it.

Onward and upward,
airforce