"Man's enemies are not demons, but human beings like himself"

"Ideas are more powerful than guns. We would not let our enemies have guns, why should we let them have ideas"

"A wise man gets more use from his enemies than a fool from his friends"

"The man of knowledge must be able not only to love his enemies but also to hate his friends"

"As our enemies have found we can reason like men, so now let us show them we can fight like men also"

"But this is a true saying among men: the gifts of enemies are no gifts and profitless"

"But whoever gives birth to useless children, what would you say of him except that he has bred sorrows for himself, and furnishes laughter for his enemies"

"Anger and intolerance are the enemies of correct understanding"

"A man who was completely innocent, offered himself as a sacrifice for the good of others, including his enemies, and became the ransom of the world. It was a perfect act"

"I choose my friends for their good looks, my acquaintances for their good characters, and my enemies for their intellects. A man cannot be too careful in the choice of his enemies"

"Let us carefully observe those good qualities wherein our enemies excel us; and endeavor to excel them, by avoiding what is faulty, and imitating what is excellent in them"