Wisdom of Ben Sira 6:6-8

New Catholic Bible

⁶ Be at peace with many people,
    but allow only one in a thousand to be your adviser.
⁷ When you wish to acquire a new friend, first test him,
    and do not be too hasty to trust him.
⁸ One type of person is only a friend when it suits him,
    but at the first sign of trouble he will desert you.