For men may prove and use ...

For men may prove and use their friends, as the poet expresses it, usque ad aras, meaning that a friend should not be required to act contrary to the law of God.
For men may prove and use their friends, as the poet expresses it, usque ad aras, meaning that a friend should not be required to act contrary to the law of God.

Quotes from the same author

Be slow of tongue and quick of eye.
Those who will play with cats must expect to be scratched.
I believe there's no proverb but what is true; they are all so many sentences and maxims drawn from experience, the universal mother of sciences.
Liberty, as well as honor, man ought to preserve at the hazard of his life, for without it life is insupportable
There are but few proverbial sayings that are not true, for they are all drawn from experience itself, which is the mother of all sciences.