Across
- 4. Founder of the Academy
- 6. Introduced concept of infinite
- 8. "You cannot step into the same river twice"
- 9. Existence of a single, unchanging, eternal reality
- 11. Influences Thomas Aquinas
Down
- 1. Develops concept of original sin
- 2. Writes Summa Theologicae
- 3. Known for thinking we should keep things simple
- 5. 1st Philosopher in Western history
- 7. Known for work in mathematics
- 10. Questions everything