Sirach 8:1-9

1 Strive not with a mighty man' lest thou fall into his hands.
2 Be not at variance with a rich man, lest he overweigh thee: for gold hath destroyed many, and perverted the hearts of kings.
3 Strive not with a man that is full of tongue, and heap not wood upon his fire.
4 Jest not with a rude man, lest thy ancestors be disgraced.
5 Reproach not a man that turneth from sin, but remember that we are all worthy of punishment.
6 Dishonour not a man in his old age: for even some of us wax old.
7 Rejoice not over thy greatest enemy being dead, but remember that we die all.
8 Despise not the discourse of the wise, but acquaint thyself with their proverbs: for of them thou shalt learn instruction, and how to serve great men with ease.
9 Miss not the discourse of the elders: for they also learned of their fathers, and of them thou shalt learn understanding, and to give answer as need requireth.

The Brenton translation of the Septuagint is in the public domain.