Plutarch

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.
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.
Rotate quotes
avoid  carefully  endeavor  

These are some quotes by Greek author Plutarch Philosopher, who lived between 46 and 120.