Good News Translation
A wise person will not speak until the right moment, but a bragging fool doesn't know when that time is.

New Revised Standard Version
The wise remain silent until the right moment, but a boasting fool misses the right moment.

Contemporary English Version
and that is true wisdom. But fools who always talk about themselves are never quiet.

New American Bible
The wise remain silent till the right time comes, but a boasting fool misses the proper time.

Douay-Rheims Bible
A wise man will hold his peace till he see opportunity: but a babbler, and a fool, will regard no time.

A wise man will hold his peace till he see opportunity: but a babbler, and a fool, will regard no time.

Sirach 20:5
There is one that holdeth his peace, that is found wise: and there is another that is hateful, that is bold in speech.

Sirach 20:6
There is one that holdeth his peace, because he knoweth not what to say: and there is another that holdeth his peace, knowing the proper time.

Sirach 20:8
He that useth many words shall hurt his own soul: and he that taketh authority to himself unjustly shall be hated.

Sirach 20:9
There is success in evil things to a man without discipline, and there is a finding that turneth to loss.