Sirach 8:1-8

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.

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