Was reading some Mises and ran across this very neat aphorismReference
Sane sicut lux se ipsam et tenebras manifestat, sic veritas norma sui et falsi est, (Latin). A dictum of Spinoza (1632-1677). Translation: “Indeed, just as light defines itself and darkness, so truth sets the standard for itself and falsity.”

Spinoza:

Spinoza is one of the most important philosophers—and certainly the most radical—of the early modern period. His thought combines a commitment to a number of Cartesian metaphysical and epistemological principles with elements from ancient Stoicism and medieval Jewish rationalism into a nonetheless highly original system. His extremely naturalistic views on God, the world, the human being and knowledge serve to ground a moral philosophy centered on the control of the passions leading to virtue and happiness. They also lay the foundations for a strongly democratic political thought and a deep critique of the pretensions of Scripture and sectarian religion. Of all the philosophers of the seventeenth-century, perhaps none have more relevance today than Spinoza.

Ludwig von MisesRead more at: http://mises.org/

The Ludwig von Mises Institute was founded in 1982 as the research and educational center of classical liberalism, libertarian political theory, and the Austrian School of economics. It serves as the world’s leading provider of educational materials, conferences, media, and literature in support of the tradition of thought represented by Ludwig von Mises and the school of thought he enlivened and carried forward during the 20th century, which has now blossomed into a massive international movement of students, professors, professionals, and people in all walks of life. It seeks a radical shift in the intellectual climate as the foundation for a renewal of the free and prosperous commonwealth.