Summa Philosophica
Peter J. Kreeft
The Virtue Ethics of Hume and Nietzsche
Christine Swanton
The Idea of Freedom - Volume 2
Mortimer Jerome Adler
Algorithms and Data Structures: The Basic Toolbox
Kurt Mehlhorn & Peter Sanders
English: An Essential Grammar
Gerald Nelson
Merriam-Webster's Dictionary of Quotations
Merriam-Webster