Craig Biddle visited Universidad Francisco Marroquín in october, 2009. During his visit he taught a six-hour seminar titled The Source and Nature of Rights.
Biddle is the Editor of The Objective Standard and an advocate of Objectivist Philosophy. In the seminar Biddle surveys common theories of rights-from God-given rights to man-made rights to so-called “natural” rights—and explains why each fails to ground rights in reality. In part two, which has yet to be posted, he begins his presentation of Ayn Rand’s theory of rights.
The seminar was divided in two parts. The first part is now available and free of charge: part one
A summary in Spanish of the seminar was prepared by Sólo historias and I strongly recommend you to check it.