Proverbs, Prudence and the Mouth

I've been reviewing some research on some very Spirit-cogent qualities (traits) and ways of operating in life, aligned to the Christ. In becoming more prudent, Proverbs advises:

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The prudent person…

Overlooks insults;

Keeps their knowledge to themselves i.e. doesn’t flaunt it;

Acts out of knowledge (which are established facts, not assumption, opinion or innuendo);

Gives thought to their ways (and steps);

Is crowned with knowledge;

Takes refuge in the sight of danger;

Keeps quiet in times of trouble; and

Heeds correction.

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In my reading of wisdom literature, it seems that there is another word linked with “the prudent,” but it is its opposite.

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The simple require prudence.

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The “simple” person...

Believes anything;

Inherits folly; and

Keeps going (in the face of danger) and suffer for it.

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Proverbs 8:5 directs the simple... “You who are simple, gain prudence.”

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One other opposite I read of for prudence was rashness. Does this mean that the simple (that are described here) are rash, and act without care? I think so.
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Possibly a greater thing regarding prudence is the role the mouth plays. Think about it...

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What do we put inside it? Whatever gets "near" the mouth invariably gets eaten, moulding our body.

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What comes out of it? Whatever comes out invariably highlights the “seat of intentions”--the heart. The Seat of Intentions (our heart) simply proves our motivation, what drives us, our values etc.

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If our heart is rotten, then what we have to say will not be clean; if our heart is pure, we'll say things that edify and build-up... (ref. Matthew 12:34-37)

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Prudence is possibly all in the mouth. It’s the outcome, or business end of things. It reveals what is going on at a heart level.

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If it matters to us, we must control what enters the mouth, and what leaves the mouth. This takes enormous discipline and years of practise--indeed, a lifetime of trial and error.