¹⁹ 
The way of the lazy is like a hedge of thorns [it pricks, lacerates, and entangles him],
But the way [of life] of the upright is smooth and open like a highway.
²⁰ 
A wise son makes a father glad,
But a foolish man despises his mother.
²¹ 
Foolishness is joy to him who is without heart and lacks [intelligent, common] sense,
But a man of understanding walks uprightly [making his course straight].^(A)