More about C. S. Lewis and The Preface

The Propers for the Friday after Ash Wednesday can be found at 

www.lectionarypage.net/WeekdaysOfLent/FridayFirstWeek.html

Here are 2 excellent websites to learn more about C. S. Lewis

The C. S. Lewis Institute at www.cslewisinstitute.org/

The Essential C. S. Lewis at essentialcslewis.com/

To read more about the different schools and disciplines of Philosophy, 

I recommend the Stanford Encyclopedia of Philosophy

plato.stanford.edu/