The Wise Produce Knowledge

Proverbs 15:7:

7 The lips of the wise spread knowledge; not so the hearts of fools.

We already know that the wise produce wisdom, but they also produce knowledge. Knowledge, not wisdom, is some kind of head content that can help give some parameters for wisdom. Those who have wisdom spread knowledge. Those who don't don't. It's why being aware of who is influencing and choosing good influence is so important.

Real Wealth for the Righteous

Proverbs 15:6:

6 In the house of the righteous there is much treasure, but trouble befalls the income of the wicked.

Practically speaking, following God's instruction is financially beneficial. This makes sense in a cooperative society that those who follow God's law, will prosper. But it's interesting that the rewards for the righteous are not income, but treasure. Seems to imply non-material gains (family, nation, health, knowledge, wisdom).