John Gills Exposition of the Bible Commentary - Proverbs 12:15
The way of a fool is right in his own eyes ,.... Whether it be the way of open profaneness, or self-righteousness, it appears to him to be the right way; it seems to him a very plain one, and he finds it pleasant; and, trusting to carnal sense, corrupt reason, and a false judgment, and having a high opinion of himself and his own knowledge, never asks after the right way, nor takes the advice of others; but he that hearkeneth unto counsel is wise ; that asks advice and takes it of... read more
Matthew Henry's Complete Commentary - Proverbs 12:15
See here, 1. What it is that keeps a fool from being wise: His way is right in his own eyes; he thinks he is in the right in every thing he does, and therefore asks no advice, because he does not apprehend he needs it; he is confident he knows the way, and cannot miss it, and therefore never enquires the way. The rule he goes by is to do that which is right in his own eyes, to walk in the way of his heart. Quicquid libet, licet?He makes his will his law. He is a fool that is governed by his... read more