Pro 1:20-22 Wisdom cries aloud in the street; in the markets she raises her voice; on the top of the walls she cries out; at the entrance of the city gates she speaks:
In Proverbs, Wisdom is not shown as something hidden, far from human grasp. Though only God has all wisdom, the existence of wisdom and God is not held out of sight. She is depicted as calling from the streets and the markets and the walls and the gates - calling to those who are lost.
Pro 1:22 "How long, O simple ones, will you love being simple? How long will scoffers delight in their scoffing and fools hate knowledge?
The implication is that simple people, people without wisdom, are happy being simple. Remember, this is the wisdom of God, not worldly wisdom. People are content without the wisdom of God. Those who mock God are happy to do so. We see this with the militant atheists writing about the evils of religion now. They mock God; they do not desire His knowledge.
Rom 1:20-23 Ever since the creation of the world his invisible nature, namely, his eternal power and deity, has been clearly perceived in the things that have been made. So they are without excuse; for although they knew God they did not honor him as God or give thanks to him, but they became futile in their thinking and their senseless minds were darkened. Claiming to be wise, they became fools, and exchanged the glory of the immortal God for images resembling mortal man or birds or animals or reptiles.