How did sinestro become evil?

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Tags

1. #power
2. #rings
3. #hoped
4. #hated
5. #sinestro
6. #partially
7. #corps
8. #powerful
9. #green
10. #affecting
11. #world
12. #prevented
13. #nemesis
14. #ruled
15. #exiling
16. #directly
17. #their
18. #humble
19. #quickly
20. #weakness
21. #specifically
22. #lantern
23. #guardians
24. #color
25. #beings
26. #yellow
27. #became