When Brothers Agree, No Fortress Is So

As Rust Corrupts Iron, So Envy Corrupts Man.

Observe Your Enemies, For They First Find Out Your Faults.

There Are Only Two People Who Can Tell You The Truth About Yourself - An Enemy Who Has Lost His Temper And A Friend Who Loves You Dearly.

I Am Sadly Afraid That I Must Have Done Some Wicked Thing.

Pay Attention To Your Enemies, For They Are The First To Discover Your Mistakes.