Good News Translation
You should not do anything in front of a stranger that should be kept secret. There is no way of knowing what will happen if you do.

New Revised Standard Version
In the presence of strangers do nothing that is to be kept secret, for you do not know what they will divulge.

Contemporary English Version
And when strangers are around don't do anything that you want kept secret-- you never know who they might tell.

New American Bible
Before a stranger do nothing that should be kept secret, for you do not know what it will produce later on.

Douay-Rheims Bible
Go not on the way with a bold man, lest he burden thee with his evils: for he goeth according to his own will, and thou shalt perish together with his folly.

Go not on the way with a bold man, lest he burden thee with his evils: for he goeth according to his own will, and thou shalt perish together with his folly.

Sirach 8:16
Be not surety above thy power: and if thou be surety, think as if thou wert to pay it.

Sirach 8:17
Judge not against a judge: for he judgeth according to that which is just.

Sirach 8:19
Quarrel not with a passionate man, and go not into the desert with a bold man: for blood is as nothing in his sight, and where there is no help he will overthrow thee.

Sirach 8:20
Advise not with fools, for they cannot love but such things as please them.