The Six Mistakes of Man:
- The illusion that personal gain is made up of crushing others.
- The tendency to worry about things that cannot be changed or corrected.
- Insisting that a thing is impossible because we cannot accomplish it.
- Refusing to set aside trivial preferences.
- Neglecting development and refinement of the mind, and not acquiring the habit of reading and study.
- Attempting to compel others to believe and live as we do.
- Marcus Tullius Cicero (106 B.C. – 43 B.C.)