Ingenuity in Mathematics
Ross Honsberger
Fractal Time: The Secret of 2012 and a New World Age
Gregg Braden
The Philosophical Discourse of Modernity: Twelve Lectures
Jürgen Habermas
Studies in Philosophy, Politics and Economics
Friedrich August Hayek
The Big Questions: A Short Introduction to Philosophy
Kathleen M. Higgins & Robert C. Solomon
Astrolabio (Aforismos)
Carlos Saavedra Weise