5. "Earth has its boundaries, but human stupidity is limitless."
- Quote by Gustave Flaubert
6. "Civilization is a limitless multiplication of unnecessary necessaries."
- Quote by Mark Twain
8. "The universe is limitless, abundant, and strangely accommodating."
- Pam Grout, E-Squared: Nine Do-It-Yourself Energy Experiments That Prove Your Thoughts Create Your Reality