1. Don’t hide your sword until you can no longer find an opponent.

2. A real opponent will instill a lot of courage in you.

3. A wise man gets more from his enemies than a fool gets from his friends.

4. Without opponents, there is no motivation. I am always grateful to my opponents.

5. Equally dangerous to you are: the enemies of your friends and the friends of your enemies.

6. Never let your sword touch the enemy who is lying at your feet begging for mercy.

7. The enemy’s opinion of us is closer to the truth than our opinion of ourselves.

8. The successful person is always the one who does more than his opponent and persists to the end.

9. No matter how many resources you have, always think of your opponent as stronger.

10. Not everyone can be a friend, but anyone can be an enemy.