6. "A mountain is not a mountain if there is nothing below."
- Thavolia Glymph, Out of the House of Bondage: The Transformation of the Plantation Household
8. "First there is a mountain, Then there is no mountain, Then there is. —Zen proverb"
- Geoffrey A. Moore, Crossing the Chasm: Marketing and Selling Disruptive Products to Mainstream Customers