Good News Translation
You have to be intelligent to learn anything; but there is such a thing as just pretending to be intelligent, which only makes people bitter.

New Revised Standard Version
The one who is not clever cannot be taught, but there is a cleverness that increases bitterness.

Contemporary English Version
You have to be smart to learn, but some kinds of smartness only make other people bitter.

New American Bible
One who is not clever can never be taught, but there is a cleverness filled with bitterness.

Douay-Rheims Bible
He that keepeth justice shall get the understanding thereof.

He that keepeth justice shall get the understanding thereof.

Sirach 21:10
The congregation of sinners is like tow heaped together, and the end of them is a flame of fire.

Sirach 21:11
The way of sinners is made plain with stones, and in their end is hell, and darkness, and pains.

Sirach 21:13
The perfection of the fear of God is wisdom and understanding.

Sirach 21:14
He that is not wise in good, will not be taught.