New International Version
Senseless people do not know, fools do not understand,

New Living Translation
Only a simpleton would not know, and only a fool would not understand this:

English Standard Version
The stupid man cannot know; the fool cannot understand this:

Berean Study Bible
A senseless man does not know, and a fool does not understand,

New American Standard Bible
A stupid person has no knowledge, Nor does a foolish person understand this:

NASB 1995
A senseless man has no knowledge, Nor does a stupid man understand this:

NASB 1977
A senseless man has no knowledge; Nor does a stupid man understand this:

Amplified Bible
A senseless man [in his crude and uncultivated state] knows nothing, Nor does a [self-righteous] fool understand this:

Christian Standard Bible
A stupid person does not know, a fool does not understand this:

Holman Christian Standard Bible
A stupid person does not know, a fool does not understand this:

Contemporary English Version
for an ignorant fool to know or understand.

Good News Translation
This is something a fool cannot know; someone who is stupid cannot understand:

GOD'S WORD® Translation
A stupid person cannot know and a fool cannot understand

International Standard Version
A stupid man doesn't know, and a fool can't comprehend this:

NET Bible
The spiritually insensitive do not recognize this; the fool does not understand this.