Ideas of History; Volume 1, Speculative Approaches to History
Ronald H. Nash
The 2000 Most useful words in the English language - Wordlist
John Bauman & Brent Culligan
The Complete Enneagram: 27 Paths to Greater Self-Knowledge
Beatrice Chestnut
Mental Leaps: Analogy in Creative Thought
Paul Thagard & Keith James Holyoak
Thomas Carlyle
Jules Paul Seigel
Intuitive Thinking as a Spiritual Path
Rudolf Steiner