A common danger unites even the bitterest enemies

A good enemy can be better than the best of friend.

We do not merely destroy our enemies; we change them

I am the cause of all my upsets. I am my worst enemy.

Tis best to weigh the enemy more mighty than he seems.

Concentrated power has always been the enemy of liberty

Take good care of your final word. If your final say will hunt you in day's ahead, then hold back the words, and let silence speak.

Nobody me without my enemy.

Be where your enemy is not.

I have an enemy and that is me.

The enemy of time is time itself.

Sometimes, I am my own worst enemy.

The enemy of my enemy is my friend.

Friendship's enemy is betrayal.

Indifference was our greatest enemy.